Cass Art Artists' Dry Pigment 110g / 250ml Ultramarine Blue Dark

Cass Art Collection

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Standard Delivery FREE on orders over £50 Full Details
Available for Click & Collect on orders over £30 Full Details

Product Overview

Ultramarine Blue Dark is an artificial mineral pigment that is produced by heating clay, soda, sulphur and coal to high temperatures. Its name comes from outremer, or over-the-sea, as a reference to the highly-prized Lapis Lazuli pigment which had been imported into Europe from Afghanistan since the Middle Ages. First manufactured in France and Germany in 1828, synthetic Ultramarine provided a brilliant and affordable blue to artists, and it remains one of the most popular blues on artists' palettes today.

It is a transparent pigment, with a high tinting strength and excellent lightfastness. It reacts to alkali, therefore it is not suitable for use in lime-fresco; we do offer a Limeproof Ultramarine Blue for this purpose. It is stable in all other media, although it can be tricky to grind in oil. Instead of creating a thick, buttery paste, it can remain stringy and deteriorate when stored in a tube. To correct this, many commercial paint manufacturers include additives and waxes in their recipes; if you intend on grinding your own paint, you could try replacing 10-15% of your Linseed Oil with Poppy Oil to improve the consistency. Ultramine Blue provides a slow-drying, fairly hard paint film, which can tend towards brittleness.

  • 250ml/110g jar
  • Strong lightfastness
  • Transparent
  • PB29
  • For use with oil, acrylic, or watercolour binder


When using do not eat, drink or smoke. Do not breathe dust. Avoid contact with eyes. In case of insufficient ventilation, wear suitable respiratory protective equipment.


  • MPN
  • Size Description
  • Paint Series
    Series 1
  • Paint Pigment Value/Code
  • Lightfastness
  • Colour Tech Description
    Ultramarine Blue Dark
  • Type
  • Form of packaging
  • Recommended For

Delivery & Returns

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Delivery Time


Standard UK


3-5 Working Days

£4.95 - £6.95
FREE over £50


Next Day UK - Standard Items


1 Working Day (2pm Cut-off)
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Mon - Fri

Up to £50

Between £50 - £100

Over £100


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Highlands & Islands

3-5 Working Days
Mon - Fri

Up to £50

Over £50


Click and Collect

2 Working Days
Mon - Fri

FREE over £20

Unavailable for orders under £20



Currently unavailable

5-8 Working Days
Mon - Fri

10€ & 15€ - FREE over 75€

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Product Code: 037168
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