Every wash I mixed in my first year came out grey. Not subtle grey, but that flat dead grey you get when three pigments cancel each other out completely.
I blamed my technique for a long time. The real culprit was a cheap set where half the colours were opaque fillers rather than genuine transparent pigment.
After fifteen years of painting and far too many palettes, I’d say the best watercolor paints are chosen by pigment quality and binder, never by how many colours sit in the tin.
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Winsor & Newton Cotman Watercolor Paint Set,... | Check Price |
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Winsor & Newton Cotman Watercolor Paint Set,... | Check Price |
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Winsor & Newton Cotman Watercolor Paint Set,... | Check Price |
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Winsor & Newton Cotman Watercolor Paint Set,... | Check Price |
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Winsor & Newton Cotman Watercolor Paint Set,... | Check Price |
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Winsor & Newton Cotman Watercolor Paint Set,... | Check Price |
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Winsor & Newton Cotman Watercolor Paint Set,... | Check Price |
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Winsor & Newton Cotman Watercolor Paint Set,... | Check Price |
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Sennelier l'Aquarelle Watercolor Tubes 10ml -... | Check Price |
Our Testing Process: Why These Rankings Are Different
Most comparisons here count colours and quote the price per pan. Neither number tells you whether a wash will stay luminous or sink into mud on the paper.
I tested for transparency first, because that property is what makes this medium behave the way people expect. Each colour was laid over a black ink line at three dilutions.
Genuinely transparent pigment lets the line read clearly through the wash. Opaque fillers veil it, and those same fillers are what turn mixed colours chalky.
The Cotman Sketchers Pocket Set performed consistently here, since the range is specified for good transparency and strong tinting even at its economical price point.
Rewetting behaviour was my second measure, and it separates the formats more than any brand difference does. Dried pans need to release pigment quickly under a damp brush.
Honey content changes this entirely. The Sennelier 24 Half Pan Set rewet faster and more generously than anything else I tested, because honey keeps the pigment semi-moist.
Tinting strength came third. I mixed each colour into a fixed quantity of white and compared how far the pigment carried before disappearing.
Strong tinting means you use less paint and get cleaner mixes. Weak tinting forces you to load the brush heavily, which wastes pigment and dulls the result.
The Cotman Studio 24 Pans offered the widest working palette for studio use, covering the earths and greys that small travel sets always omit.
Finally I checked lightfastness claims against the published ratings, since a painting that fades within a few years is not worth framing.
How To Choose Watercolor Paints: Buying Guide
Pigment Quality And Single Pigment Colours
The single most useful thing to learn in this medium is the difference between a single pigment colour and a convenience mix.
Single pigment colours mix cleanly with each other because there are fewer competing particles fighting in the wash. Three-pigment mixes turn muddy almost immediately when combined.
Artist-grade ranges publish the pigment codes on every tube and pan, letting you build a palette that mixes predictably rather than by trial and error.
Hue in a colour name signals a substitute pigment rather than the original. It is not automatically bad, and it does behave differently from the genuine article.
Transparency Versus Opacity
Transparency is what gives this medium its glow, because light passes through the pigment, bounces off the white paper and comes back to your eye.
Opaque pigments block that path, which is why paintings made with filler-heavy paint look flat and lifeless regardless of colour choice.
Test any set by painting a wash over a black ink line. Transparent colours let the line show clearly, and opaque ones veil it noticeably.
Some opacity is useful, particularly in earth colours and Chinese White. The problem is when opacity appears where you expected transparency.
Pans Versus Tubes
Pans are dried cakes of paint you rewet with a brush, while tubes hold moist paint you squeeze out fresh each session.
Pans suit travel, sketching and quick studies. Everything lives in one box, nothing leaks, and you can work standing with the palette in one hand.
Tubes suit studio work and large washes, because you can mix a generous quantity of colour without scrubbing at a hard cake repeatedly.
Many painters end up with both, using tubes to fill empty pans. That gives you tube-quality paint in a travel-friendly format.
Binder Type And Rewetting
Gum arabic is the traditional binder, and the quality of that gum affects how the paint handles more than most people realise.
Honey is added by some makers as a plasticiser and preservative, keeping the paint semi-moist and making dried pans rewet far more readily.
Honey-based paint stays creamy in the pan and releases pigment generously under a damp brush. It also stays tacky in humid conditions.
Traditional gum arabic formulations dry harder in the pan and need more brush work to activate, while travelling better in heat and humidity.
Colour Count Versus Palette Planning
More colours is not better, and large sets frequently include colours you will never reach for while omitting ones you need constantly.
A well-chosen twelve will outperform a random forty every time. You need a warm and cool version of each primary plus a few earths.
Twenty four is a genuinely comprehensive studio palette, adding the greys, umbers and secondary options that speed up studio work.
Count what you actually mix rather than what looks generous on the shelf. Unused pans are money sitting in a tin.
Lightfastness And Permanence
Lightfastness determines whether your painting still looks the same in a decade, and the ratings are published for any serious range.
Look for permanent and lightfast claims backed by an actual rating scale rather than vague marketing language on the packaging.
Some historically beautiful pigments are fugitive, meaning they fade under light exposure. Modern substitutes replicate the hue with far better permanence.
If you sell or frame work, this matters. If you paint studies in a sketchbook that lives closed, it matters considerably less.
Set Contents And Included Tools
Travel sets vary enormously in what they include beyond the paint, and those extras affect whether you actually use the set outdoors.
A pocket brush and integral mixing palette in the lid are the minimum for genuine field work. Without a palette you have nowhere to mix.
Better field boxes add a water bottle, a clip-on water container and a small sponge, which together make painting away from a tap practical.
A kneaded eraser in the box is a small touch that saves carrying a separate one for lifting pencil under a wash.
Comparison Table Of Watercolor Paints
| Product Name | Format | Best For |
|---|---|---|
| Cotman Sketchers Pocket Set | 12 Half Pans | Everyday Sketching And Travel |
| Cotman Field Pocket Set | 12 Half Pans Plus Water Kit | Outdoor Painting Away From Taps |
| Cotman Complete Pocket Set | 16 Half Pans | Wider Travel Palette |
| Cotman Studio 24 Pans | 24 Whole Pans | Studio Work And Large Washes |
| Cotman 20 Tube Set | 20 x 5ml Tubes | Filling Custom Palettes |
| Cotman 12 Tube Set | 12 x 8ml Tubes | Larger Volume Per Colour |
| Cotman 10 Tube Starter | 10 x 5ml Tubes | First Tube Purchase |
| Cotman Portrait Half Pans | 8 Half Pans | Skin Tones And Figure Work |
| Sennelier 24 Half Pan Set | 24 Artist Grade Half Pans | Luminosity And Rewetting |
| Sennelier Aquarelle Tube | 10ml Single Tube | Replacing One Favourite Colour |
10 Best Watercolor Paints Reviews (Updated)
Cotman Sketchers Pocket Set
Winsor & Newton Cotman Watercolor Paint Set,...
| Spec | Detail |
|---|---|
| Contents | 12 half pans plus pocket brush |
| Palette | Integral mixing palette in lid |
| Case | Pocket-sized plastic box |
| Properties | Good transparency, excellent tinting strength |
| Grade | Student range with fine art pigments |
| Colours | Lemon Yellow Hue through Chinese White |
This is the set I recommend to almost everyone starting out, and the reason is the colour selection rather than the price.
The twelve half pans cover a warm and cool version of each primary plus the earths, which is exactly what a functional mixing palette needs.
Lemon Yellow Hue and Cadmium Yellow Hue give you both ends of the yellow range. Alizarin Crimson Hue and Cadmium Red Pale Hue do the same for red.
Ultramarine and Intense Blue, which is Phthalo Blue, cover warm and cool blues properly. That single pairing solves most beginner mixing problems immediately.
The integral mixing palette in the lid is what makes this genuinely usable rather than merely portable. You cannot mix without a surface.
The range is specified for good transparency and excellent tinting strength, which held up in my ink-line testing across most colours.
A pocket brush is included, and while it is not a brush you will keep forever, it works perfectly well for sketchbook studies.
The honest limitation is that this is a student range. Some costlier pigments are replaced with economical alternatives, marked by the word Hue in the name.
What I Love:
- Twelve colours cover warm and cool primaries properly
- Integral lid palette makes mixing possible anywhere
- Good transparency confirmed in ink-line testing
- Pocket brush included for immediate sketchbook use
- Relates directly to the professional range for later upgrading
What To Improve:
- Hue substitutes replace several costlier pigments
- Included brush is functional rather than good
- Half pans run out quickly on larger washes
Cotman Field Pocket Set
Winsor & Newton Cotman Watercolor Paint Set,...
| Spec | Detail |
|---|---|
| Contents | 12 half pans, pocket brush, artists sponge |
| Water | 35ml water bottle and clip-on container |
| Case | Lightweight compact field box |
| Design | Fits in a pocket |
| Colours | Cadmium Yellow Pale Hue through Chinese White |
| Use | Outdoor watercolour painting |
If you paint outdoors, this is the version to buy, and the water kit is the entire reason.
A 35ml water bottle and a clip-on water container mean you can paint on a hillside with no tap, stream or café within reach.
That sounds minor until you have carried a jam jar of water up a footpath. The clip-on container attaches to the box so you are not balancing anything.
The artists sponge handles lifting, blotting and controlling excess water, which matters more outdoors where you cannot control humidity or wind.
The colour selection differs slightly from the Sketchers set, including Cobalt Blue Hue and Viridian Hue alongside the standard earths.
Lightweight construction is deliberate, and the box genuinely fits in a coat pocket rather than requiring a bag of its own.
Cotman paints handle predictably in the field, releasing pigment readily from the pan once rewet with a damp brush.
The drawback is capacity. The water bottle holds enough for a small study rather than a session, so plan to refill or carry more.
What I Love:
- Water bottle and clip-on container solve outdoor painting
- Artists sponge controls water and lifts cleanly
- Genuinely pocket-sized lightweight field box
- Colour selection adds Cobalt and Viridian hues
What To Improve:
- 35ml water capacity suits short studies only
- Half pans are small for larger sky washes
- Hue substitutes remain throughout the range
Cotman Complete Pocket Set
Winsor & Newton Cotman Watercolor Paint Set,...
| Spec | Detail |
|---|---|
| Contents | 16 half pans, pocket brush, kneaded eraser |
| Palette | Mixing palette included |
| Colours | Includes Turquoise, Sap Green, Payne’s Gray |
| Properties | Good transparency, excellent tinting strength |
| Grade | Student range |
| Format | Half pan |
Sixteen half pans is the sweet spot for travel in my experience, adding useful colours without becoming a box you leave at home.
The additions over the twelve-pan sets matter. Turquoise, Sap Green and Payne’s Gray each solve problems that would otherwise need careful mixing.
Payne’s Gray in particular saves time, giving you a ready neutral for shadows rather than mixing one from complements every session.
The kneaded eraser is a thoughtful inclusion. Lifting pencil under a wash without damaging the paper surface is exactly what a kneaded eraser does well.
A pocket brush and mixing palette complete the kit, so nothing else is needed beyond water and paper.
Colour range spans Cadmium Yellow Pale Hue through Chinese White, covering both warm and cool primaries alongside a full earth selection.
The same transparency and tinting characteristics apply as elsewhere in the range, which is consistent rather than variable between sets.
Sixteen pans does make the box larger than a true pocket set, so check the dimensions if you are packing genuinely light.
What I Love:
- Sixteen pans balance range against portability well
- Payne’s Gray saves mixing neutrals every session
- Kneaded eraser lifts pencil without damaging paper
- Turquoise and Sap Green cover awkward mixing gaps
What To Improve:
- Larger box than a genuine pocket set
- No water bottle or clip-on container included
- Hue substitutes throughout the colour range
Cotman Studio 24 Pans
Winsor & Newton Cotman Watercolor Paint Set,...
| Spec | Detail |
|---|---|
| Contents | 24 whole pans |
| Box | Lightweight plastic with detachable lid |
| Palette | Detachable palette for easy cleaning |
| Colours | Full range including Raw Umber, Light Red, Ivory Black |
| Format | Whole pan, double the half pan volume |
| Use | Studio work |
Whole pans hold twice the paint of half pans, and for studio work that difference is far more practical than it sounds.
Large washes drain a half pan quickly, forcing you to rewet and scrub repeatedly. Whole pans let you load a brush generously in one pass.
Twenty four colours is a genuinely comprehensive palette, and the additions here are the ones travel sets always omit.
Raw Sienna, Raw Umber, Light Red and Payne’s Gray between them cover the muted range that landscape and architectural work relies on.
A detachable lid and palette is the feature I appreciate most day to day, because cleaning a fixed palette in a shallow box is genuinely awkward.
Cobalt Blue Hue, Cerulean Blue Hue and Intense Blue give three distinct blues, which matters for skies more than any other subject.
The lightweight plastic construction keeps the box manageable despite the size, and it survives being knocked off a table.
This is not a travel set. The footprint is studio-sized, and taking it out means carrying a proper bag rather than using a pocket.
What I Love:
- Whole pans hold double the paint for large washes
- Twenty four colours cover the full muted range
- Detachable lid and palette clean easily
- Three distinct blues handle skies properly
- Lightweight plastic survives studio knocks
What To Improve:
- Footprint is too large for genuine travel
- No brush included with the set
- Whole pans cost more upfront than half pans
Cotman 20 Tube Set
Winsor & Newton Cotman Watercolor Paint Set,...
| Spec | Detail |
|---|---|
| Contents | 20 tubes at 5ml each |
| Volume | 0.17 oz per tube |
| Colours | Chinese White through Lamp Black |
| Consistency | Uniform across the range |
| Properties | Lightfast and permanent |
| Format | Tube |
Twenty tubes is the most complete tube selection in this range, and it is what I would buy to fill a custom palette.
Tube paint squeezed into empty pans gives you the best of both formats. You get tube quality in a travel-friendly box you assembled yourself.
That approach also lets you arrange colours in a logical order rather than accepting whatever sequence the maker chose.
The selection is genuinely broad, including Prussian Blue, Turquoise, Emerald, Viridian Hue and Dioxazine Purple alongside the standard primaries and earths.
Permanent Rose is the standout inclusion, since it handles the pinks and violets that Alizarin substitutes never quite reach.
Uniform consistency across the range is a deliberate design choice, meaning each tube behaves similarly. That helps beginners who have enough to learn already.
Five millilitre tubes suit filling half pans and mixing moderate washes, and twenty of them represents a real quantity of paint.
The limitation is tube size. If you paint large and use one colour heavily, 5ml runs out faster than you expect.
What I Love:
- Twenty colours fill a complete custom pan palette
- Permanent Rose covers pinks other sets miss
- Uniform consistency simplifies learning the medium
- Tube format allows generous mixing for washes
What To Improve:
- 5ml tubes empty quickly on heavily used colours
- No palette or box included with the set
- Tubes dry out if caps are left loose
Cotman 12 Tube Set
Winsor & Newton Cotman Watercolor Paint Set,...
| Spec | Detail |
|---|---|
| Contents | 12 tubes at 8ml each |
| Volume | 0.27 oz per tube |
| Colours | Cadmium Yellow Hue through Chinese White |
| Properties | Good transparency, excellent tinting strength |
| Grade | Student range |
| Format | Tube |
Eight millilitre tubes are the reason to choose this over the twenty-colour set, and for most painters it is the better maths.
You get sixty percent more paint per tube, which matters enormously on the colours you use constantly rather than occasionally.
Ultramarine, Burnt Sienna and Yellow Ochre empty fastest in almost every palette. Having more of them beats having colours you rarely touch.
The twelve selected colours are well chosen, covering warm and cool primaries alongside Cerulean Blue Hue, Prussian Blue and Viridian Hue.
Ivory Black and Chinese White round it out, giving you the two ends that some sets omit on principle.
Tube format means you can mix a generous puddle of colour before starting, which is how large washes should be approached.
The same good transparency and excellent tinting strength apply across the range, consistent with the pan versions.
Twelve colours is fewer than the alternatives, so you will be mixing more secondaries yourself. For learning the medium, that is arguably a benefit.
What I Love:
- 8ml tubes hold sixty percent more than 5ml versions
- Twelve colours cover warm and cool primaries fully
- More paint in the colours you actually exhaust
- Generous mixing volume for large washes
What To Improve:
- Fewer colours than the twenty tube alternative
- No Permanent Rose or Dioxazine Purple included
- Requires mixing most secondaries yourself
Cotman 10 Tube Starter
Winsor & Newton Cotman Watercolor Paint Set,...
| Spec | Detail |
|---|---|
| Contents | 10 tubes at 5ml each |
| Volume | 0.17 oz per tube |
| Colours | Lemon Yellow Hue through Lamp Black |
| Consistency | Uniform, formulated for new users |
| Properties | Lightfast and permanent |
| Format | Tube |
Ten tubes is the smallest sensible tube purchase, and the selection is more thoughtful than the count suggests.
Lemon Yellow Hue, Cadmium Orange Hue, Cadmium Red Deep Hue, Permanent Rose and Dioxazine Purple give a genuinely wide warm range.
Ultramarine and Cerulean Blue Hue cover both blue temperatures, while Hooker’s Green Light and Burnt Sienna handle greens and earths.
Including Permanent Rose and Dioxazine Purple in a ten-colour set is unusual and welcome, since most starter sets skip both entirely.
The transparent quality is specifically noted as suited to new users, and the uniform consistency means each tube handles predictably.
For someone testing whether tube format suits them before committing to a larger set, this is the right size purchase.
Lightfast and permanent specifications apply across the range, so work made with these will hold up reasonably over time.
The obvious gap is the absence of Chinese White, which some painters consider essential and others deliberately avoid. Know which camp you are in.
What I Love:
- Ten colours cover a surprisingly wide range
- Permanent Rose and Dioxazine Purple included unusually
- Uniform consistency suits new users learning the medium
- Small commitment for testing tube format
What To Improve:
- No Chinese White in the selection
- 5ml tubes run out quickly on favourites
- Limited earth colours for landscape work
Cotman Portrait Half Pans
Winsor & Newton Cotman Watercolor Paint Set,...
| Spec | Detail |
|---|---|
| Contents | 8 half pans with brush |
| Focus | Portrait and figure colours |
| Colours | Cadmium Yellow Pale Hue, Cadmium Red Hue, Rose Madder Hue |
| Earths | Yellow Ochre, Burnt Sienna, Burnt Umber |
| Neutrals | Indigo and Chinese White |
| Format | Half pan |
This is the specialist entry, and it solves a problem that general sets handle poorly.
Skin tones are mixed from a narrow range of warm earths and muted reds, not from the bright primaries that dominate most starter palettes.
Rose Madder Hue is the key inclusion here, giving a softer pink than Alizarin or Cadmium Red for the subtle warmth in skin.
Yellow Ochre, Burnt Sienna and Burnt Umber together cover the full range from pale to deep complexion tones. Those three do most of the work.
Indigo replaces black as the shadow colour, which is the correct choice since black kills the life in skin shadows immediately.
Eight pans keeps the palette disciplined, and discipline is exactly what portrait mixing requires. More colours would invite muddier results.
A brush is included, making this a complete small kit for figure studies away from the studio.
This is genuinely not a general-purpose set. There is no proper blue or green here, so landscape and still life work needs something else entirely.
What I Love:
- Rose Madder Hue gives softer pinks for skin
- Three earths cover pale to deep complexions
- Indigo replaces black for living shadows
- Eight pans enforce the discipline portraits need
What To Improve:
- No usable blue or green for other subjects
- Too narrow as a first or only set
- Half pans limit larger figure washes
Sennelier 24 Half Pan Set
| Spec | Detail |
|---|---|
| Contents | 24 half pans |
| Case | Metal box with palette |
| Binder | Gum arabic from Cordofan plus honey |
| Grade | Extra fine artist quality |
| Texture | Creamy and brilliant |
| Technique | Suited to wet-on-wet |
This is the artist-grade comparison point, and the difference from student paint is obvious within one wash.
The binder uses gum arabic made from Cordofan alongside honey, and that combination is what produces the creamy texture and brilliance.
Honey keeps the pans semi-moist, so they rewet faster and more generously than traditional dried pans. My brush picked up colour instantly.
The pigments are moistened with purified water twenty four hours before being added to the binder, which improves how fully the colour binds.
Traditional slow grinding keeps the paste from heating, which the maker states protects the purity of each shade. You can see it in the saturation.
Wet-on-wet work benefits most from this formulation, since the creamy base flows and blooms readily rather than sitting where you placed it.
Twenty four colours in a metal box with a palette makes this a complete studio or serious travel solution.
Two honest caveats. It costs considerably more than student ranges, and honey-based paint stays tacky in humid conditions, which matters if you paint in a hot climate.
What I Love:
- Honey binder makes pans rewet instantly and generously
- Cordofan gum arabic produces genuinely creamy texture
- Slow grinding preserves pigment purity and saturation
- Excels at wet-on-wet blooming and flow
- Twenty four artist-grade colours with metal box and palette
What To Improve:
- Costs substantially more than student ranges
- Honey content stays tacky in humid conditions
- Semi-moist pans can smear if the box is jolted
Sennelier Aquarelle Tube
Sennelier l'Aquarelle Watercolor Tubes 10ml -...
| Spec | Detail |
|---|---|
| Volume | 10ml tube |
| Range | Featuring 50 single pigment colours |
| Binder | Increased honey content |
| Qualities | Enhanced brilliance and luminosity |
| Heritage | Palette in the French Impressionist tradition |
| Format | Single tube |
Buying single tubes is how experienced painters actually build a palette, and this range makes that approach worthwhile.
Fifty single pigment colours sit within the full range, many unique to this maker. Single pigment matters because those colours mix cleanly without going muddy.
A ten millilitre tube is a genuine working quantity, enough to fill several pans or mix repeated large washes.
The reformulation with increased honey content improves brilliance and luminosity, and the honey also acts as a preservative extending the paint’s usable life.
The palette follows the French Impressionist tradition, meaning bright and lively colours rather than the muted heritage range you might expect.
Replacing one exhausted favourite with an artist-grade version is the smartest upgrade path for anyone painting on a student set.
You keep your existing palette and improve the colour you use most, which costs far less than replacing everything at once.
The obvious limitation is that a single tube is not a set. You need a palette or empty pans, and building a full range this way costs meaningfully more.
What I Love:
- Fifty single pigment colours mix without going muddy
- 10ml gives a genuine working quantity of paint
- Increased honey content improves brilliance and longevity
- Ideal upgrade path for one exhausted favourite colour
What To Improve:
- Single tube requires your own palette or pans
- Building a full range this way costs considerably more
- Bright Impressionist palette may not suit muted subjects
Frequently Asked Questions About Watercolor Paints
What Is The Difference Between Student And Artist Watercolor Paints?
Pigment load is the main difference. Artist grades carry more pigment and less filler, which produces stronger tinting and cleaner mixing.
Student ranges keep costs down by replacing expensive pigments with economical alternatives, marked by the word Hue after the colour name.
Those substitutes are not automatically bad. They behave differently from the original pigment, and the better student ranges deliberately match hues to their professional line so you can mix both without changing technique.
Should I Buy Pans Or Tubes For Watercolor Paints?
Pans suit travel, sketching and quick studies, since everything lives in one box, nothing leaks, and you can paint standing with the palette in hand.
Tubes suit studio work and large washes, because you can mix a generous puddle without scrubbing repeatedly at a hardened cake.
Many painters end up using both, squeezing tube paint into empty pans. That gives you tube-quality colour in a travel-friendly format you arranged yourself, which is the approach I would recommend once you know your palette.
How Many Colours Do Watercolor Paints Really Need?
Fewer than most sets contain. A well-chosen twelve will outperform a random forty because the twelve mix together predictably.
You need a warm and cool version of each primary, plus two or three earths and perhaps a ready-made neutral for shadows.
Twenty four becomes genuinely useful for studio work, adding the greys, umbers and muted options that speed things up. Beyond that, most extra colours sit unused while you mix what you actually need anyway.
Why Do My Watercolor Paints Look Muddy?
Usually because you are mixing too many pigments at once, or because the colours contain opaque fillers that block light from the paper.
Single pigment colours mix cleanly because fewer particles compete in the wash. Convenience mixes made from three pigments turn grey almost immediately when combined.
Overworking a wash is the other culprit. Lifting and reworking a drying area disturbs the pigment already settled into the paper, and the result is always duller than leaving it alone.
Do Watercolor Paints With Honey Perform Better?
They rewet far more readily, which is a genuine practical advantage. Honey acts as a plasticiser, keeping dried pans semi-moist rather than rock hard.
That means your brush picks up colour instantly instead of requiring vigorous scrubbing to activate a dried cake.
Honey also acts as a preservative, extending the paint’s usable life. The trade-off is that honey-based paint stays tacky in humid conditions, so it travels less well in hot climates than traditional gum arabic formulations.
How Important Is Lightfastness In Watercolor Paints?
It depends entirely on what happens to the finished work. A painting hung in daylight needs permanent pigments to survive a decade unchanged.
Studies in a closed sketchbook see almost no light exposure, so fugitive pigments matter considerably less there.
Serious ranges publish lightfastness ratings for every colour rather than making vague permanence claims. If you sell or frame work, check those ratings before committing to a palette built around historically beautiful but fugitive pigments.
How Do I Test If Watercolor Paints Are Transparent?
Draw a line with waterproof black ink, let it dry completely, then paint a wash of each colour across it at three dilutions.
Transparent pigment lets the line read clearly through the wash, while opaque colour veils or partly hides it.
This single test tells you more about a set than any product description will. Opacity is where muddiness starts, because opaque particles block the light bouncing off the paper that gives this medium its characteristic glow.
What Do Hue And Single Pigment Mean On Watercolor Paints?
Hue after a colour name signals a substitute pigment that imitates the original, usually because the genuine pigment is expensive, toxic or unavailable.
Single pigment means the tube or pan contains exactly one pigment rather than a blend of several mixed to achieve the colour.
Single pigment colours are what you want for a mixing palette, since combining two of them produces a clean result. Combining two three-pigment mixes puts six competing particles in one wash, which is how mud happens.
Can I Use Old Or Dried Watercolor Paints?
Dried pans rewet indefinitely, which is one of the medium’s great practical advantages. A pan from years ago works fine with a damp brush.
Tubes that have hardened are usually recoverable too. Cut the tube open, let the block dry fully, then treat it as a pan.
The exception is paint that has cracked and separated from the pan, which happens when the binder degrades. That paint will still colour but it flakes and lifts unpredictably, so replacing it is simpler.
Final Thoughts
Ten sets later, my view is that the palette matters more than the price tag.
Start with the Cotman Sketchers Pocket Set if you are new to the medium. Twelve well-chosen colours and a lid palette teach you mixing faster than forty random pans ever will.
Painters working outdoors should take the Cotman Field Pocket Set instead, purely for the water bottle and clip-on container.
Anyone ready to feel the difference between student and artist paint wants the Sennelier 24 Half Pan Set, where the honey binder changes how every wash behaves.
The best watercolor paints are the ones whose colours mix cleanly together, so buy a considered twelve before you buy an impressive forty.