- blue, bluish, blueish, light-blue, dark-blue, blue-black - having a color similar to that of a clear unclouded sky; "October's bright blue weather"- Helen Hunt Jackson; "a blue flame"; "blue haze of tobacco smoke"
Antonym: achromatic (indirect, via chromatic)
- dark blue, navy, navy blue - a dark shade of blue
--1 is a kind of blue, blueness