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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Canary yellow, purple and cobalt blue provide a cool, bright and punchy color palette for pieces like circle skirts and statement outerwear. Angela Velasquez, Sourcing Journal, 20 Jan. 2026 Rendered in a punchy palette of cream, hot pink, cobalt blue, and highlighter yellow, the fashion-forward topper has two roomy pockets and a quarter-button-up silhouette. Kelsey Stewart, Travel + Leisure, 18 Jan. 2026 Pops of cobalt blue, hot pink, lavender, spring green, and more just radiate fun. Ariel Wodarcyk, InStyle, 17 Jan. 2026 Reese paired the boots with a long, sleeveless fur vest cut in a checkerboard of plush blocks in complementary hues of black, cobalt blue and gray. Maggie Clancy, Footwear News, 16 Jan. 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 1 Feb. 2026.

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