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royal blue

American

noun

a deep blue, often with a faint reddish tinge.

royal blue British

noun

1. a deep blue colour
2. ( as adjective )
  
  a royal-blue carpet

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Noun Inflected Forms

royal blues

plural

Etymology

Origin of royal blue

First recorded in 1810–20

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Example Sentences

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See Examples For:

royal blue

The vessels are glazed a deep, glossy royal blue.

From The Wall Street Journal ● Oct. 1, 2025

Powder blue jerseys brushed past royal blue horns in burger lines.

From Los Angeles Times ● Aug. 17, 2025

Their left hand is beautifully manicured in sparkling purple and royal blue.

From BBC ● May 30, 2025

He donned a royal blue Valentino cloak that paid homage to Andre Leon Talley, former editor-at-large on Vogue whom Anna Wintour called "a dandy among dandies."

From BBC ● May 5, 2025

They had her wearing a royal blue dress I had never seen, with pearl buttons and a boat-neck collar, and her blue hat.

From "The Secret Life of Bees" by Sue Monk Kidd

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023