Winsor & Newton Cotman Watercolor Half Pan - Emerald

Cotman Watercolor

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  • Blick Art Materials
    $6.29 USDShop
    Recorded Oct 21, 2026, 12:21 PM UTC

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Product details
Blick SKU
00337-7050
About this product range
  • Quality student-grade range
  • 40+ colors, including modern and historic pigments
  • Strong tint strength
  • Reliable transparency and lightfastness
  • Uniform consistency for beginners and students

Winsor & Newton Cotman Watercolors deliver the quality the brand is known for at an accessible price for students and beginners. The range includes over 40 colors chosen for their tone, undertone, strength, and mixability. Whether you're building a basic palette or exploring color mixing, Cotman delivers smooth, even washes with vibrant results.

Made with both traditional and modern pigments—from natural earths to organic compounds—these watercolors offer a range of effects, from easy-lifting hues to more staining, expressive shades. Most colors are transparent, and the consistent feel across the range makes Cotman especially friendly for beginners.

By replacing a few of the more expensive pigments with cost-effective alternatives, this line delivers reliable performance at a smart price—without compromise. Rated good to excellent for permanence, Cotman is a solid choice for students, hobbyists, or any artist seeking vibrant, dependable color at great value.

Pigment information

General reference notes about pigments can describe other media (such as oil). They do not verify this product’s exact formulation or behavior.

Phthalo Green

Pigment code
PG7
Type
organic
Chemical name
polychlorinated copper(II) phthalocyanine
Chemical formula
C32H3Cl13CuN8 to C32HCl15CuN8 or C32H16CuN8Cl15 (PG7) or C32Br6Cl10CuN8 (PG36)
Properties
Phthalo Green is a transparent, cool, bright, high intensity color used in oil and acrylics. It comes from a Phthalocyanine Blue pigment where most of the hydrogen atoms have been replaced with chlorine, forming highly stable molecules. It has similar pigment properties and permanence to Phthalo Blue. It is slow drying and an excellent base color for mixing a range of bright greens. Phthalo Green is considered a very good alternative to Viridian because it is intense and mixes well and can be used to emphasize mineral colors in various tints. However, its tinting strength is very high, so it can overpower other colors. This pigment most closely resembles the discontinued and toxic Verdigris.
Permanence
Phthalo Greens are completely lightfast and resistant to alkali, acids, solvents, heat, and ultraviolet radiation. They are currently used in inks, coatings, and many plastics due to their stability and are considered a standard pigment in printing ink and the packaging industry.
Description
Bocour Green, Cyan Green, Intense Green, Monastral Green, Phthalocyanine Green BS, Rembrandt Green, Thalo Green, Winsor Green.

Benzimidazolone Yellow

Pigment code
PY175
Type
monoazo
Properties
Benzimidazolone Yellow is a bright yellow, semi-transparent pigment, slightly greenish, with dull tints and an average drying time.
Permanence
Benzimidazolone Yellow has excellent lightfastness.
Toxicity
Benzimidazolone Yellow is not considered toxic.
History
The benzimidazolone group of pigments was developed and patented in 1960 by Hoechst A.G., a German chemical manufacturer that was a forerunner of the pharmaceutical company Aventis.
Description
Benzimidazolone.

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