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

Photographed heading to Lattanzi in New York with his colleagues for the week, Storrie opted for a chocolate brown, shearling collared leather jacket by Sandro, a cobalt blue knit, straight-leg blue jeans, and black Saint Laurent penny loafers with white socks. —Anna Cafolla, Vogue, 25 Feb. 2026

The first features a pair of vibrant cobalt blue Augusto Bozzi chairs. —Lisa Lockwood, Footwear News, 30 Jan. 2026

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

Word History

First Known Use

1835, in the meaning defined at sense 1

Rhymes for cobalt blue

• accrue
• ado
• ainu
• aircrew
• airscrew
• anew
• askew
• baboo
• babu
• bamboo
• beaucoup
• bijou