- ultramarine - of a brilliant pure blue to purplish blue color
Antonym: achromatic (indirect, via chromatic)
- ultramarine, ultramarine blue - blue pigment made of powdered lapis lazuli
--1 is a kind of pigment
--1 has particulars: French blue, French ultramarine, French ultramarine blue - ultramarine - vivid blue to purple-blue
--2 is a kind of blue, blueness