American Journey Artists' Watercolor - Cobalt Blue, 37 ml, (PB28)American Journey Artists' Watercolor Paint offers artists the finest raw materials and high quality, maximum strength pigments available. This guarantees clean, strong colors and makes for a more professional painting. Cobalt Blue Cobalt Blue is Cerulean on the green side and Ultramarine on the red and this unique color makes muted greens when mixed with Cadmium Yellow. Joe suggests mixing Cobalt Blue with Quinacridone Gold Deep to create olives on