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Royal blue (traditional)
Color coordinates
Hex triplet	#002366
sRGB (r, g, b)	(0, 35, 102)
HSV (h, s, v)	(219°, 100%, 40%)
CIELChuv (L, C, h)	(16, 44, 260°)
Source	ISCC-NBS
B: Normalized to (byte)

Royal blue (web color)
Color coordinates
Hex triplet	#4169E1
sRGB (r, g, b)	(65, 105, 225)
HSV (h, s, v)	(225°, 71%, 88%)
CIELChuv (L, C, h)	(48, 103, 260°)
Source	X11
B: Normalized to (byte)

Royal blue is both a bright shade and a dark shade of azure blue. It is said to have been created by millers in Rode, Somerset, a consortium of which won a competition to make a dress for Queen Charlotte, consort of King George III.

Brightness

Traditionally, dictionaries define royal blue as a deep to dark blue, often with a purple or faint reddish tinge. Oxford English Dictionary defines it as "deep vivid blue".

By the 1950s, many people began to think of royal blue as a brighter color, and it is this brighter color that was chosen as the web color "royal blue" (the web colors when they were formulated in 1987 were originally known as the X11 colors). The World Wide Web Consortium designated the keyword "royalblue" to be this much brighter color, rather than the traditional darker version of royal blue.

Variations

Queen blue

Queen blue
Color coordinates
Hex triplet	#436B95
sRGB (r, g, b)	(67, 107, 149)
HSV (h, s, v)	(211°, 55%, 58%)
CIELChuv (L, C, h)	(44, 43, 245°)
Source	ISCC-NBS
B: Normalized to (byte)

Queen blue is a medium tone of royal blue.

The first recorded use of queen blue as a color name in English was in 1926. Before that, since 1661, this color had been called queen’s blue.

In human culture

Auto racing

• In auto racing, royal blue (called "imperial blue") is the traditional color of Ford and Carroll Shelby, and for 2012, the primary livery for Hendrick Motorsports' #48 sponsored by Lowe's.

Flags

• Royal blue is an official color used in the flags of American Samoa, Cayman Islands, the European Union, Galicia, Georgia, Israel, New Zealand, Texas, Tuvalu, and the United Kingdom.
• The Flag of the Philippines uses a royal blue bar: if it is displayed over the red half, the country is in a state of peace; reversing this (i.e. red above blue) transforms the flag into the war ensign.

Ink

• Royal blue is a traditional color of writing ink, employed by many fountain pens, ballpoint pens and ink cartridges.

Music

• "Royal Blue" is the title of a song by the Cold War Kids.
• "Royal Blue" is the title of a song by Rudy Currence.

Politics

• Traditional royal blue was the color of the federal Canadian Progressive Conservative Party (no longer in existence).

Transport

• The Royal Blue was the name of a Baltimore and Ohio Railroad train.
• Royal Blue was the name of a major operator of coach services in the south and west of England from 1880 to 1986.

Uniforms

• When, in 2008, the United States Transportation Security Administration changed the color of airport screener uniforms from white to royal blue, they found that it made the work of the airport screeners easier because airline passengers became more compliant, apparently because by wearing blue, the airport screeners came to be perceived more as authority figures.
• Royal blue is the facing color of the mess dress for Le Régiment de Hull. It also appears as one of the three regimental colors, along with argent and or.

See also

• Cobalt blue
• Navy blue
• Azure
• Shades of blue

References

1. "The Origin of Royal Blue". Rode History Internet-ink. 18 August 2011. Retrieved 12 February 2011.
2. "royal, adj. and n." OED Online. Oxford University Press, December 2016. Web. 3 March 2017.
3. Maerz and Paul A Dictionary of Color New York: 1930 McGraw-Hill Page 201; Color Sample of Queen Blue: Page 95 Plate 36 Color Sample B8
4. "Flags - Ministry for Culture and Heritage". Retrieved 22 October 2016.
5. "Royal Blue Express - FROM NEW YORK TO BALTIMORE AND WASHINGTON BY RAIL". Retrieved 22 October 2016.
6. "American Flyer Trains - The Eli Whitney Museum and Workshop". Retrieved 22 October 2016.
7. Royal Blue Gallery
8. Uniform Market News July 2008:

• Shades of blue