french blue
noun,
often capitalized F
Definition of french blue
1 : a strong purplish blue that is the color of ultramarine prepared artificially —called also artificial ultramarine, French ultramarine, Gmelin's blue, Guimet's blue, lime blue, new blue, permanent blue
2 : ultramarine 1b
Read the Latest from M-W
There's more!
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!
Seen and Heard
What made you want to look up french blue? Please tell us where you read or heard it (including the quote, if possible).
Writing? Check your grammar now!