napoleon blue

noun, often capitalized N

Definition of napoleon blue

: a deep blue that is greener and very slightly deeper than Yale blue and greener, lighter, and stronger than royal (see royal sense 8b)

called also Helvetia blue

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History and Etymology for napoleon blue

after Napoleon I

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Cite this Entry

“Napoleon blue.” Dictionary, Merriam-Webster, Accessed 1 Dec. 2020.

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