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Winsor & NewtonPaints

Winsor & Newton Cotman Watercolor Half Pan - Prussian Blue

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
00337-5220
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.

Antwerp Blue

Pigment code
PB27
Type
inorganic
Chemical name
ferric ammonium ferrocyanide
Chemical formula
C18Fe7N18
Properties
Antwerp Blue is a slightly warm and less saturated blue with good transparency and undertone clarity. It is a pale variety of Prussian Blue with 75% inert pigment. It has similar properties to pure Prussian Blue, but its overall performance is inferior.
Permanence
Antwerp Blue can fluctuate, fading in the light and recovering in the dark. In watercolor form, it fades when mixed with white pigment or extender. Although it has reasonably good lightfastness and permanence, it is not considered ideal for permanent painting.
Toxicity
Antwerp Blue is mildly toxic by ingestion, but is considered safe for external use. In the United States, ferric ferrocyanide is permitted as a coloring ingredient for externally applied cosmetics, but not for lipsticks or internal use. If the pigment is
History
Antwerp Blue was developed through experimentation with Prussian Blue.
Description
Haarlem Blue, Mansa Blue, Mineral Blue

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