This medium-to-dark warm, reddish-blue is highly lightfast and medium tinting strength. It's sedimentary quality increases its versatility. Mixed with various portions of other blues, French Ultramarine is a wonderful sky pigment. Modify it with Quinacridone Gold for delightful greens that remain color-coordinated. Mix French Ultramarine with Quinacridone Burnt Orange and be rewarded with an amazing range of blue to brown grays. Mixed with either Quinacridone Rose or Pink, a range of purples result. For another important mix, see Hooker's and Sap Green.
Ultramarine Blue and French Ultramarine both contain pigment PB29, but Ultramarine has a smaller pigment particle size and is slightly greener and cooler than French Ultramarine, which has a larger pigment particle size and is slightly redder and warmer.
