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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Equally enchanting this fashion month were Celine’s colorful leather pouches—particularly in cobalt blue, a trending hue—as seen on Ramya Giangola and Yumi Shin below. Andrea Zendejas, Vogue, 27 Apr. 2026 With flower hues ranging from white to deep cobalt blue, and silvery foliage, this colorful perennial is a showstopper. Peg Aloi, The Spruce, 12 Apr. 2026 There Ferreira wore a bold cobalt blue corseted gown designed by Zac Posen. Daisy Maldonado, InStyle, 7 Apr. 2026 As for colors, the Abound SR comes in cobalt blue, black, and purple. Erica Zazo, Outside, 27 Mar. 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 2 May. 2026.

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