Ultramarine Blue (15ml Watercolors)


Violet-Blue, Transparent

Ultramarine Blue is a transparent violet-blue. As we do not dilute our colours with filler the washes are particularly transparent. Gives very bright violets with our Quinacridone Violet, dull semi opaque greens with Cadmium Yellow Light and reasonably transparent mid greens with our Hansa Yellow. It will not fade on exposure.




Out of stock

SKU: PW UBWC16 123725 Category: Tag:


Ultramarine Blue, PB29 is a superb pigment, lightfast, transparent and with a useful range of values. An invaluable violet-blue. Manufactured since 1830, it has more than proven its worth. Rated ASTM 1 in all of our media, it is absolutely lightfast.

  • Possesses a high tinting strength with moderate covering power.
  • Valued for its transparency, giving very clear washes.
  • In hue, Ultramarine Blue leans towards violet. It is in fact the only violet blue really worth considering. Fast to alkali but very easily damaged by even weak acids. Non-metallic preservatives.


Additional information

Weight .08 lbs
Dimensions 4 × 1 × 1 in
Type of Paint

Artists Quality Watercolour Paint

Colour Type

Violet-Blue, Transparent

Common Name

Ultramarine Blue

Colour Index Name

PB29 (Pigment Blue 29)

Colour Index Number


Chemical Class

Complex Silicate of Sodium and Aluminium with Sulpur

ASTM rating

Rated ASTM 1 in all of our media, it is absolutely lightfast.



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