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

The celebrated Estelle glasses are sold in a set of six and come in eight showy hues: black, blush pink, mint green, lavender, rose, red, cobalt blue, and yellow. —Maria Conti, Better Homes & Gardens, 3 June 2025

Plus, the packaging employs vibrant hues of neon orange, hot pink and cobalt blue. —Emily Burns, Footwear News, 28 May 2025

This option from notable Danish designer Montana Furniture (known for its modular storage solutions and vibrant paint jobs) boasts a myriad of eye-catching colors like a fiery red, energetic lilac, and cobalt blue to bring an air of excitement to your workday. —Erika Owen, Architectural Digest, 3 June 2025

It is featured on the collection’s dinnerware and table linens, and often complemented with pops of cobalt blue. —India Roby, Architectural Digest, 2 May 2025

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