Michael Harding Artists Oil Colours - Cobalt Blue (No. 506) - 40ml

Inorganic – Introduced at about the same time as Ultramarine, Cobalt Aluminate is a synthetic, inorganic pigment. It is more greenish-blue, with a heavier, more mineral appearance when seen as a dry pigment. The hues formed from it are correspondingly heavier and greyer. But it has a certain shade that the less expensive ultramarine cannot quite match. The paint film, when cured, is quite soft.

Colour Index PB28
Drying Speed Very Fast
Transparency Semi-Transparent
Lightfastness Excellent
Oil Content Average
Tint Power Average
Toxicity Non-Toxic
ASTM D-4236 Yes
Prop 65 Yes