Professional Watercolour - Cobalt Blue Deep YGroup_Pro_Acrylic water-colourist William Payne who created

water-colourist William Payne who created the mixture and often recommended it to his students as an alternative to plain black

The masstone colour is a very dark and intense maroon

It maintains brilliance of colour while boosting transparency

Transparent Red Ochre is one of the oldest pigments

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Professional Watercolour - Cobalt Blue Deep YGroup_Pro_Acrylic water-colourist William Payne who createdCobalt Deep Blue is the darker red shade of its sister pigment Cobalt Blue. It was discovered in 1802 by French chemist Louis Thnard as an alternative pigment to the expensive lapis lazuli pigment.