Cobalt Blue Deep, which uses a distinct pigment from Cobalt Blue (PB28), is a highly granulating, purple-toned deep blue similar to French Ultramarine (PB29).
Color Spotlight: Cobalt Blue Deep (PB74)
cobalt blue deep
Watercolor Dirtbag
Cobalt Blue Deep, which uses a distinct pigment from Cobalt Blue (PB28), is a highly granulating, purple-toned deep blue similar to French Ultramarine (PB29).