Colour number/code: 552

Series number: 1

Chemical Description: Synthetic iron oxide, Synthetic iron oxide

Colour index name: PY42, PR101

Colour index number: 77492, 77491

Permanence rating: AA

ASTM Lightfastness Rating: I

Transparency/Opacity: T

Granulating/Staining: -



The range of 40 colours are chosen according to mass tone (colour from tube), undertone (bias of colour when in a thin film), colour strength, relative opacity and the character of the pigment itself. The resultant colour spectrum ensures the largest number of colours can be mixed.

The Cotman Water Colour range has a more uniform consistency than the Artists' Water Colour range and this benefits beginners as there is less to learn about each individual pigment. The Cotman Water Colour range also relates to the Winsor & Newton Artists' Water Colour range, this enables artists to use colours from both ranges with minimal adjustment to their technique.

Colour number/code: 137

Series number: 2

Chemical Description: Cobalt stannate

Colour index name: PB35

Colour index number: 77368

Permanence rating: AA

ASTM Lightfastness Rating: I

Transparency/Opacity: O

Granulating/Staining: G



The range of 40 colours are chosen according to mass tone (colour from tube), undertone (bias of colour when in a thin film), colour strength, relative opacity and the character of the pigment itself. The resultant colour spectrum ensures the largest number of colours can be mixed.

The Cotman Water Colour range has a more uniform consistency than the Artists' Water Colour range and this benefits beginners as there is less to learn about each individual pigment. The Cotman Water Colour range also relates to the Winsor & Newton Artists' Water Colour range, this enables artists to use colours from both ranges with minimal adjustment to their technique.

Colour number/code: 312

Series number: 1

Chemical Description: Copper phthalocyanine, Chlorinated copper phthalocyanine, Quinacridone

Colour index name: PB15, PG7, PO49Color index number: 74160, 74250, 73900

Permanence rating: A

ASTM Lightfastness Rating: -

Transparency/Opacity: T

Granulating/Staining: St



The range of 40 colours are chosen according to mass tone (colour from tube), undertone (bias of colour when in a thin film), colour strength, relative opacity and the character of the pigment itself. The resultant colour spectrum ensures the largest number of colours can be mixed.

The Cotman Water Colour range has a more uniform consistency than the Artists' Water Colour range and this benefits beginners as there is less to learn about each individual pigment. The Cotman Water Colour range also relates to the Winsor & Newton Artists' Water Colour range, this enables artists to use colours from both ranges with minimal adjustment to their technique.

Colour number/code: 150

Series number: 1

Chemical Description: Zinc oxide

Colour index name: PW4

Colour index number: 77947

Permanence rating: AA

ASTM Lightfastness Rating: I

Transparency/Opacity: O

Granulating/Staining: -



The range of 40 colours are chosen according to mass tone (colour from tube), undertone (bias of colour when in a thin film), colour strength, relative opacity and the character of the pigment itself. The resultant colour spectrum ensures the largest number of colours can be mixed.

The Cotman Water Colour range has a more uniform consistency than the Artists' Water Colour range and this benefits beginners as there is less to learn about each individual pigment. The Cotman Water Colour range also relates to the Winsor & Newton Artists' Water Colour range, this enables artists to use colours from both ranges with minimal adjustment to their technique.

Colour number/code: 554

Series number: 1

Chemical Description: Natural iron oxide, Synthetic iron oxide

Colour index name: PBr7, PY42

Colour index number: 77492, 77492

Permanence rating: AA

ASTM Lightfastness Rating: I

Transparency/Opacity: T

Granulating/Staining: -



The range of 40 colours are chosen according to mass tone (colour from tube), undertone (bias of colour when in a thin film), colour strength, relative opacity and the character of the pigment itself. The resultant colour spectrum ensures the largest number of colours can be mixed.

The Cotman Water Colour range has a more uniform consistency than the Artists' Water Colour range and this benefits beginners as there is less to learn about each individual pigment. The Cotman Water Colour range also relates to the Winsor & Newton Artists' Water Colour range, this enables artists to use colours from both ranges with minimal adjustment to their technique.

Colour number/code: 544

Series number: 1

Chemical Description: Thioindigo violet

Colour index name: PR88

Colour index number: 73312

Permanence rating: A

ASTM Lightfastness Rating: II

Transparency/Opacity: T

Granulating/Staining: -



The range of 40 colours are chosen according to mass tone (colour from tube), undertone (bias of colour when in a thin film), colour strength, relative opacity and the character of the pigment itself. The resultant colour spectrum ensures the largest number of colours can be mixed.

The Cotman Water Colour range has a more uniform consistency than the Artists' Water Colour range and this benefits beginners as there is less to learn about each individual pigment. The Cotman Water Colour range also relates to the Winsor & Newton Artists' Water Colour range, this enables artists to use colours from both ranges with minimal adjustment to their technique.

Colour number/code: 98

Series number: 1

Chemical Description: Naphthol AS, Pyrrole

Colour index name: PR188, PR254

Colour index number: 12467, -

Permanence rating: A

ASTM Lightfastness Rating: -

Transparency/Opacity: T

Granulating/Staining: St



The range of 40 colours are chosen according to mass tone (colour from tube), undertone (bias of colour when in a thin film), colour strength, relative opacity and the character of the pigment itself. The resultant colour spectrum ensures the largest number of colours can be mixed.

The Cotman Water Colour range has a more uniform consistency than the Artists' Water Colour range and this benefits beginners as there is less to learn about each individual pigment. The Cotman Water Colour range also relates to the Winsor & Newton Artists' Water Colour range, this enables artists to use colours from both ranges with minimal adjustment to their technique.

Colour number/code: 179

Series number: 1

Chemical Description: Complex sodium alumino-silicate containing sulphur, Coprecipitated zinc sulphide/ barium sulphate

Colour index name: PB29, PW5

Colour index number: 77007, 77115

Permanence rating: A(iii)

ASTM Lightfastness Rating: I

Transparency/Opacity: T

Granulating/Staining: -



The range of 40 colours are chosen according to mass tone (colour from tube), undertone (bias of colour when in a thin film), colour strength, relative opacity and the character of the pigment itself. The resultant colour spectrum ensures the largest number of colours can be mixed.

The Cotman Water Colour range has a more uniform consistency than the Artists' Water Colour range and this benefits beginners as there is less to learn about each individual pigment. The Cotman Water Colour range also relates to the Winsor & Newton Artists' Water Colour range, this enables artists to use colours from both ranges with minimal adjustment to their technique.

Colour number/code: 329

Series number: 1

Chemical Description: Brominated copper phthalocyanine

Colour index name: PG36

Colour index number: 74265

Permanence rating: A

ASTM Lightfastness Rating: I

Transparency/Opacity: T

Granulating/Staining: St



The range of 40 colours are chosen according to mass tone (colour from tube), undertone (bias of colour when in a thin film), colour strength, relative opacity and the character of the pigment itself. The resultant colour spectrum ensures the largest number of colours can be mixed.

The Cotman Water Colour range has a more uniform consistency than the Artists' Water Colour range and this benefits beginners as there is less to learn about each individual pigment. The Cotman Water Colour range also relates to the Winsor & Newton Artists' Water Colour range, this enables artists to use colours from both ranges with minimal adjustment to their technique.

Color number/code: 609

Series number: 1

Chemical Description: Calcined natural iron oxide

Color index name: PBr7, PBk7

Color index number: 77491, 77266

Permanence rating: AA

ASTM Lightfastness Rating: I

Transparency/Opacity: T

Granulating/Staining: -

Colour number/code: 696

Series number: 1

Chemical Description: Chlorinated copper phthalocyanine

Colour index name: PG7

Colour index number: 74260

Permanence rating: A

ASTM Lightfastness Rating: I

Transparency/Opacity: T

Granulating/Staining: St

Colour number/code: 74

Series number: 1

Chemical Description: Synthetic iron oxide

Colour index name: PR101

Colour index number: 77491

Permanence rating: AA

ASTM Lightfastness Rating: I

Transparency/Opacity: T

Granulating/Staining: -



The range of 40 colours are chosen according to mass tone (colour from tube), undertone (bias of colour when in a thin film), colour strength, relative opacity and the character of the pigment itself. The resultant colour spectrum ensures the largest number of colours can be mixed.

The Cotman Water Colour range has a more uniform consistency than the Artists' Water Colour range and this benefits beginners as there is less to learn about each individual pigment. The Cotman Water Colour range also relates to the Winsor & Newton Artists' Water Colour range, this enables artists to use colours from both ranges with minimal adjustment to their technique.

Colour number/code: 322

Series number: 1

Chemical Description: Copper phthalocyanine, Carbon black, Complex sodium alumino-silicate containing sulphur

Colour index name: PB15, PBk7, PB29

Colour index number: 74160, 77266, 77007

Permanence rating: A

ASTM Lightfastness Rating: II

Transparency/Opacity: O

Granulating/Staining: -



The range of 40 colours are chosen according to mass tone (colour from tube), undertone (bias of colour when in a thin film), colour strength, relative opacity and the character of the pigment itself. The resultant colour spectrum ensures the largest number of colours can be mixed.

The Cotman Water Colour range has a more uniform consistency than the Artists' Water Colour range and this benefits beginners as there is less to learn about each individual pigment. The Cotman Water Colour range also relates to the Winsor & Newton Artists' Water Colour range, this enables artists to use colours from both ranges with minimal adjustment to their technique.

Colour number/code: 266

Series number: 1

Chemical Description: Quinacridone, Azo Nickel Complex

Colour index name: PR209 PY150

Colour index number: 48545

Permanence rating: A

ASTM Lightfastness Rating: II

Transparency/Opacity: T

Granulating/Staining: -



The range of 40 colours are chosen according to mass tone (colour from tube), undertone (bias of colour when in a thin film), colour strength, relative opacity and the character of the pigment itself. The resultant colour spectrum ensures the largest number of colours can be mixed.

The Cotman Water Colour range has a more uniform consistency than the Artists' Water Colour range and this benefits beginners as there is less to learn about each individual pigment. The Cotman Water Colour range also relates to the Winsor & Newton Artists' Water Colour range, this enables artists to use colours from both ranges with minimal adjustment to their technique.

New Gamboge - pigment change Originally produced using Gamboge, a coloured gum from the Garcinia plant, Artists' Water Colour Gamboge was discontinued in 2005, due to its toxic characteristics. Its replacement was a different shade, due to the pigments available and renamed New Gamboge. Due to the above pigment discontinuation, New Gamboge, in both Professional Water Colour and Cotman, has been reformulated once again and, with advances in pigment technology, the colour is much closer to its original namesake, delivering greater authenticity within the spectrum. The pigments have changed from Nickel Dioxine PY153 to Quinacridone PR209 & Azo Nickel Complex PY150

Colour number/code: 327

Series number: 1

Chemical Description: Copper phthalocyanine

Colour index name: PB15

Colour index number: 74160

Permanence rating: A

ASTM Lightfastness Rating: II

Transparency/Opacity: T

Granulating/Staining: St



The range of 40 colours are chosen according to mass tone (colour from tube), undertone (bias of colour when in a thin film), colour strength, relative opacity and the character of the pigment itself. The resultant colour spectrum ensures the largest number of colours can be mixed.

The Cotman Water Colour range has a more uniform consistency than the Artists' Water Colour range and this benefits beginners as there is less to learn about each individual pigment. The Cotman Water Colour range also relates to the Winsor & Newton Artists' Water Colour range, this enables artists to use colours from both ranges with minimal adjustment to their technique.

Colour number/code: 502

Series number: 1

Chemical Description: Quinacridone violet

Colour index name: PV19

Colour index number: 46500

Permanence rating: A

ASTM Lightfastness Rating: II

Transparency/Opacity: T

Granulating/Staining: St



The range of 40 colours are chosen according to mass tone (colour from tube), undertone (bias of colour when in a thin film), colour strength, relative opacity and the character of the pigment itself. The resultant colour spectrum ensures the largest number of colours can be mixed.

The Cotman Water Colour range has a more uniform consistency than the Artists' Water Colour range and this benefits beginners as there is less to learn about each individual pigment. The Cotman Water Colour range also relates to the Winsor & Newton Artists' Water Colour range, this enables artists to use colours from both ranges with minimal adjustment to their technique.

Color number/code: 76

Series number: 1

Chemical Description: Synthetic iron oxide, Calcined natural iron oxide

Color index name: PY42, PBr7

Color index number: 77492, 77491

Permanence rating: AA

ASTM Lightfastness Rating: I

Transparency/Opacity: O

Granulating/Staining: -

Colour number/code: 660

Series number: 1

Chemical Description: Complex sodium alumino-silicate containing sulphur

Colour index name: PB29

Colour index number: 77007

Permanence rating: A(iii)

ASTM Lightfastness Rating: I

Transparency/Opacity: T

Granulating/Staining: G



The range of 40 colours are chosen according to mass tone (colour from tube), undertone (bias of colour when in a thin film), colour strength, relative opacity and the character of the pigment itself. The resultant colour spectrum ensures the largest number of colours can be mixed.

The Cotman Water Colour range has a more uniform consistency than the Artists' Water Colour range and this benefits beginners as there is less to learn about each individual pigment. The Cotman Water Colour range also relates to the Winsor & Newton Artists' Water Colour range, this enables artists to use colours from both ranges with minimal adjustment to their technique.

Colour number/code: 465

Series number: 1

Chemical Description: Complex sodium alumino-silicate containing sulphur, Carbon black, Copper phthalocyanine

Colour index name: PB29, PBk7, PB15

Colour index number: 77007, 77266, 74160

Permanence rating: A

ASTM Lightfastness Rating: -

Transparency/Opacity: T

Granulating/Staining: -



The range of 40 colours are chosen according to mass tone (colour from tube), undertone (bias of colour when in a thin film), colour strength, relative opacity and the character of the pigment itself. The resultant colour spectrum ensures the largest number of colours can be mixed.

The Cotman Water Colour range has a more uniform consistency than the Artists' Water Colour range and this benefits beginners as there is less to learn about each individual pigment. The Cotman Water Colour range also relates to the Winsor & Newton Artists' Water Colour range, this enables artists to use colours from both ranges with minimal adjustment to their technique.

Colour number/code: 231

Series number: 1

Chemical Description: Dioxazine violet

Colour index name: PV23

Colour index number: 51319

Permanence rating: A

ASTM Lightfastness Rating: -

Transparency/Opacity: T

Granulating/Staining: St



The range of 40 colours are chosen according to mass tone (colour from tube), undertone (bias of colour when in a thin film), colour strength, relative opacity and the character of the pigment itself. The resultant colour spectrum ensures the largest number of colours can be mixed.

The Cotman Water Colour range has a more uniform consistency than the Artists' Water Colour range and this benefits beginners as there is less to learn about each individual pigment. The Cotman Water Colour range also relates to the Winsor & Newton Artists' Water Colour range, this enables artists to use colours from both ranges with minimal adjustment to their technique.

Colour number/code: 599

Series number: 1

Chemical Description: Brominated copper phthalocyanine, Quinacridone

Colour index name: PG36, PO49

Colour index number: 74265, 73900

Permanence rating: A

ASTM Lightfastness Rating: -

Transparency/Opacity: T

Granulating/Staining: St



The range of 40 colours are chosen according to mass tone (colour from tube), undertone (bias of colour when in a thin film), colour strength, relative opacity and the character of the pigment itself. The resultant colour spectrum ensures the largest number of colours can be mixed.

The Cotman Water Colour range has a more uniform consistency than the Artists' Water Colour range and this benefits beginners as there is less to learn about each individual pigment. The Cotman Water Colour range also relates to the Winsor & Newton Artists' Water Colour range, this enables artists to use colours from both ranges with minimal adjustment to their technique.

Color number/code: 317

Series number: 1

Chemical Description: Synthetic iron oxide

Color index name: PR101

Color index number: 77491

Permanence rating: AA

ASTM Lightfastness Rating: I

Transparency/Opacity: O

Granulating/Staining: -

Dr. Ph. Martin's Radiant Concentrated Water Color is produced in an extremely concentrated form to achieve the greatest possible brilliance. Each liquid color comes in an iconic 0.5 oz (15 ml) glass bottle package with its own eyedropper.

Dr. Ph. Martin's colors are primarily formulated for use in graphic arts work on paper surfaces intended for reproduction (e.g. cartooning, illustration, and other graphic arts), and are especially popular for airbrushing. Like all dye based colors though, they are fugitive when exposed to direct sunlight over time.

For lightfast, archival watercolor use Dr. Ph. Martin's Radiant Fine Art Watercolor.

Dr. Ph. Martin's Radiant Concentrated Water Color is produced in an extremely concentrated form to achieve the greatest possible brilliance. Each liquid color comes in an iconic 0.5 oz (15 ml) glass bottle package with its own eyedropper.

Dr. Ph. Martin's colors are primarily formulated for use in graphic arts work on paper surfaces intended for reproduction (e.g. cartooning, illustration, and other graphic arts), and are especially popular for airbrushing. Like all dye based colors though, they are fugitive when exposed to direct sunlight over time.

For lightfast, archival watercolor use Dr. Ph. Martin's Radiant Fine Art Watercolor.