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cerulean blue

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noun
  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.

Origin of cerulean blue

First recorded in 1885–90
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018