Ultramarine Blue: Warm Ultramarine Blue is one of the few mineral colors that are transparent. Lightfast with moderate tinting strength. Makes clean violets when mixed with Quinacridone Red.
Pigment: Complex silicate of sodium & aluminum with sulfur (PB 29)
Vehicle: Alkyd resin, refined linseed oil
Lightfastness I, Series 2, TRANSPARENT, SDS