Using only the highest-quality pure pigment, our A J Ludlow Colours’ Cobalt Violet (Blue Shade) powder is suitable for all home-made paint formulations, including water, oil and acrylic colours, as well as solvent-based acrylic or polycarbonate resins. Cobalt Violet (Blue Shade) pigment powder is a violet shade inorganic metallic phosphate pigment, triscobalt (II) bis(orthophosphate) tetrahydrate. The pigment has excellent light fastness, but has a relatively low tinctorial strength.