CERULEAN
azure, cerulean, sky-blue, bright blue
(adjective) of a deep somewhat purplish blue color similar to that of a clear October sky; “October’s bright blue weather”
azure, cerulean, sapphire, lazuline, sky-blue
(noun) a light shade of blue
Source: WordNet® 3.1
Etymology
Noun
cerulean (countable and uncountable, plural ceruleans)
(countable and uncountable, color) A greenish-blue color.
(countable) Any of various lycaenid butterflies of the genus Jamides.
Adjective
cerulean (comparative more cerulean, superlative most cerulean)
Sky-blue.
Anagrams
• Laurence, crenulae
Source: Wiktionary
Ce*ru"le*an, a. Etym: [L. caeruleus.]
Definition: Sky-colored; blue; azure. Cowper.
Blue, blue, as if that sky let fall
A flower from its cerulean wall. Bryant.
Source: Webster’s Unabridged Dictionary 1913 Edition