Colour
#C51E31
- #C51E31
- Red
- Dark
- Nearest: Firebrick
#C51E31 is a red with RGB values 197, 30, 49 and HSL 353°, 74%, 45%. It is a dark colour, so white text on it reaches 5.8:1 contrast (AA for normal text). The nearest named colour is Firebrick.
Colour values
#C51E31#C51E31
HEX#C51E31
RGBrgb(197, 30, 49)
RGB (0–1)0.7725, 0.1176, 0.1922
RGB percentages77.3%, 11.8%, 19.2%
HSLhsl(353.2, 73.6%, 44.5%)
HSV / HSBhsv(353.2, 84.8%, 77.3%)
CMYK0%, 84.8%, 75.1%, 22.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer12,918,321
CSS custom property--colour: #C51E31;
Brightness & contrast
Relative luminance0.13021WCAG 2.x, 0 is black and 1 is white
Perceived brightness111.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.83:1
Contrast with white5.83:1WCAG normal text: AA
Contrast with black3.6:1WCAG normal text: Fail
Greyscale equivalent#434343
Inverted#3AE1CE
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text5.83:1WCAG large text: AAA
Contrast with black, large text3.6:1WCAG large text: AA
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#1EC5B2
Analogous#C51E84, #C55F1E
Triadic#31C51E, #1E31C5
Split complementary#1EC55E, #1E84C5
Tetradic#84C51E, #1EC5B2, #5F1EC5
Tints, shades & saturation
Channel breakdown
R197
G30
B49
Red197 (77.3%)
Green30 (11.8%)
Blue49 (19.2%)
Hue353.17°
Saturation (HSL)73.57%
Lightness44.51%
Dominant channelRed
Hex per channelR C5 · G 1E · B 31
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