Meaning of cerulean blue

ceru'lean blue'

Pronunciation: [key]
  1. a light-blue to strong greenish-blue color.
  2. a pigment used in painting consisting mainly of oxides of tin and cobalt, chiefly characterized by its greenish-blue color and permanence.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.