Maerz and Paul A Dictionary of Color New York : 1930 McGraw-Hill Page 190 ; Color Sample of Cerulean : Page 89 Plate 33 Color Sample E6 The word is probably derived from the Latin word caeruleus ',' dark blue, blue or blue-green '', which in turn probably derives from caelulum, diminutive of caelum, '' heaven, sky ''.
Maerz and Paul A Dictionary of Color New York : 1930 McGraw-Hill Page 190 ; Color Sample of Cerulean : Page 89 Plate 33 Color Sample E6 Meaning of cerulean Cerulean represents the '' sky '' or '' heavens '', or sometimes the ocean.