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

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The vessels are glazed a deep, glossy royal blue.

From The Wall Street Journal • Oct. 1, 2025

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

From BBC • May 30, 2025

So there’s no turning that whole place royal blue and yellow.

From Los Angeles Times • Apr. 6, 2025

Then the director introduced Megan, regally dressed in a royal blue silk gown and sporting an updo.

From Salon • Nov. 1, 2024

A silver line lay across the opposite bank, sun cutting into the last of the night’s royal blue.

From "Jazz" by Toni Morrison

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