A blue to green pigment consisting of a variable mixture of cobalt oxide and alumina.(noun)
A moderate to deep vivid blue or greenish blue.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "cobalt blue" in a sentence
" As far as the eye could see there was nothing but mile upon mile of never-ending sand, burning golden-red against the cobalt blue sky."
"Theme colors are bright, bold colors like fire-truck red and cobalt blue highlighted with metallic colors like silver and gold."
"You lay down a wash of cobalt blue on a good white paper like a 240-pound cold-pressed D'Arches."