cerulean blue

noun

Definition of cerulean blue

1a : a variable color averaging a strong greenish blue that is bluer and duller than grotto or cobalt blue and bluer and lighter than indigo carmine

b : a strong blue that is greener and stronger than Sèvres and greener, lighter, and stronger than Victoria blue

— called also coelin

2 : a stable light greenish blue pigment consisting essentially of oxides of cobalt and tin and used as an artist's color

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cerulean warbler

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