cobalt blue

noun

1
: a greenish-blue pigment consisting essentially of cobalt oxide and alumina
2
: a strong greenish blue

Examples of cobalt blue in a Sentence

Recent Examples on the Web
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During a visit to the Christie NHS Foundation Trust, a leading cancer center in greater Manchester, the Princess of Wales wore her cobalt blue Eponine London coatdress with a lapis lazuli necklace that has a meaningful connection to the city. Stephanie Bridger-Linning, Vanity Fair, 9 June 2026 The Parlor next door operates at a different frequency, with cobalt blue and deep purple walls, a slower service pace, and a menu that demands more of the kitchen. Carrie Honaker, Bon Appetit Magazine, 5 June 2026 The royal wore a cobalt blue Eponine coat dress for the solo outing, sporting the blue hue in tribute to the National Health Service (NHS). Janine Henni, PEOPLE, 5 June 2026 For the visit, the future queen rewore a cobalt blue Eponine London dress and meaningful jewelry nodding to Manchester. Rachel Burchfield, InStyle, 4 June 2026 See All Example Sentences for cobalt blue

Word History

First Known Use

1835, in the meaning defined at sense 1

Time Traveler
The first known use of cobalt blue was in 1835

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Cite this Entry

“Cobalt blue.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cobalt%20blue. Accessed 11 Jun. 2026.

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