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

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

History and Etymology for napoleon blue

after Napoleon I

Keep scrolling for more

Comments on napoleon blue

What made you want to look up napoleon blue? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

tired or exhausted

Get Word of the Day daily email!

Test Your Vocabulary

Where in the World? A Quiz

  • peter bruegel tower of babel painting
  • What language does pajama come from?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Bee Cubed

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!