Recognised as Colour
#C51D3F
- #C51D3F
- Red
- Dark
- Nearest: Crimson
#C51D3F is a red with RGB values 197, 29, 63 and HSL 348°, 74%, 44%. It is a dark colour, so white text on it reaches 5.8:1 contrast (AA for normal text). The nearest named colour is Crimson.
Colour values
#C51D3F#C51D3F
HEX#C51D3F
RGBrgb(197, 29, 63)
RGB (0–1)0.7725, 0.1137, 0.2471
RGB percentages77.3%, 11.4%, 24.7%
HSLhsl(347.9, 74.3%, 44.3%)
HSV / HSBhsv(347.9, 85.3%, 77.3%)
CMYK0%, 85.3%, 68%, 22.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer12,918,079
CSS custom property--colour: #C51D3F;
Brightness & contrast
Relative luminance0.13108WCAG 2.x, 0 is black and 1 is white
Perceived brightness112 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.8:1
Contrast with white5.8:1WCAG normal text: AA
Contrast with black3.62:1WCAG normal text: Fail
Greyscale equivalent#434343
Inverted#3AE2C0
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text5.8:1WCAG large text: AAA
Contrast with black, large text3.62:1WCAG large text: AA
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#1DC5A3
Analogous#C51D93, #C54F1D
Triadic#3FC51D, #1D3FC5
Split complementary#1DC54F, #1D93C5
Tetradic#93C51D, #1DC5A3, #4F1DC5
Tints, shades & saturation
Channel breakdown
R197
G29
B63
Red197 (77.3%)
Green29 (11.4%)
Blue63 (24.7%)
Hue347.86°
Saturation (HSL)74.34%
Lightness44.31%
Dominant channelRed
Hex per channelR C5 · G 1D · B 3F
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