cerulean

adjective

ce·​ru·​le·​an sə-ˈrü-lē-ən How to pronounce cerulean (audio)
: resembling the blue of the sky

Did you know?

There comes a moment in every young crayon user’s life when they graduate from the 8-count (or 16-count, perhaps) box to the treasure trove of 64 glorious sticks of differently colored wax, when they discover that there isn’t just one brown or orange or blue, that when it comes to colors, the sky’s the limit! Such a moment is often the first encounter people have with the word cerulean, a word that slips sibilantly off the tongue like a balmy ocean breeze. Like azure, cerulean describes things whose blue color resembles that of a clear sky; it’s often used in literature (especially travel writing) to paint an enticing image of an even more enticing vista, as in “the cerulean waters of a tropical lagoon.” While azure is thought to hail from the Persian word lāzhuward, with the same meaning, cerulean comes from the Latin adjective caeruleus, meaning “dark blue.” That word most likely comes from caelum, meaning “sky.”

Examples of cerulean in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
And who knows, perhaps in that sea of glam someone will be brave enough to challenge the Runway editor and wear a cerulean sweater. Alfredo Toriello, Vanity Fair, 6 Feb. 2026 The 77 rooms and four oceanfront bungalows—with interiors by Joseph Dirand—highlight clean, Art Deco–inspired lines around the floor-to-ceiling windows framing the cerulean water. Devorah Lev-Tov, Robb Report, 5 Feb. 2026 Quiet paths dotted with white and yellow blossoms and scarlet jungle flames lead to powdery beaches hugged by cerulean waters. Natasha Amar, Forbes.com, 28 Jan. 2026 This stunning manicure features shades of evergreen, Kelly green, denim, baby blue, and cerulean. Kara Jillian Brown, InStyle, 20 Jan. 2026 See All Example Sentences for cerulean

Word History

Etymology

Latin caeruleus dark blue

First Known Use

1599, in the meaning defined above

Time Traveler
The first known use of cerulean was in 1599

Browse Nearby Words

Podcast

Cite this Entry

“Cerulean.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cerulean. Accessed 15 Feb. 2026.

Kids Definition

cerulean

adjective
ce·​ru·​le·​an sə-ˈrü-lē-ən How to pronounce cerulean (audio)
: colored blue like the sky

More from Merriam-Webster on cerulean

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster