Blue and Cobalt blue

Blue noun - The expanse of air surrounding the earth.

Cobalt blue and blue are semantically related. in sky-blue topic. In some cases you can use "Cobalt blue" instead an adjective "Blue".

Nearby Words: blues, blued, bluish, blueing, bluet

Cobalt blue noun - A shade of blue tinged with green.

Blue and cobalt blue are semantically related. You can use "Blue" instead a noun phrase "Cobalt blue".