adjective. of a brilliant pure blue to purplish blue color.
noun. a vivid blue to purple-blue color.
noun. blue pigment made of powdered lapis lazuli.
1. Adjective Add a small amount of ultramarine blue and Venetian red and mix well. 2. Noun, singular or mass Mixing ultramarine or cobalt blue with yellow ochre will make an olive green, but a Prussian or phthalo blue will make a dark, vibrant olive green.
