Recognised as Colour
#D13731
- #D13731
- Red
- Dark
- Nearest: Firebrick
#D13731 is a red with RGB values 209, 55, 49 and HSL 2°, 63%, 51%. It is a dark colour, so white text on it reaches 4.9:1 contrast (AA for normal text). The nearest named colour is Firebrick.
Colour values
#D13731#D13731
HEX#D13731
RGBrgb(209, 55, 49)
RGB (0–1)0.8196, 0.2157, 0.1922
RGB percentages82%, 21.6%, 19.2%
HSLhsl(2.3, 63.5%, 50.6%)
HSV / HSBhsv(2.3, 76.6%, 82%)
CMYK0%, 73.7%, 76.6%, 18%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer13,711,153
CSS custom property--colour: #D13731;
Brightness & contrast
Relative luminance0.16509WCAG 2.x, 0 is black and 1 is white
Perceived brightness122.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 4.88:1
Contrast with white4.88:1WCAG normal text: AA
Contrast with black4.3:1WCAG normal text: Fail
Greyscale equivalent#575757
Inverted#2EC8CE
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.88:1WCAG large text: AAA
Contrast with black, large text4.3:1WCAG large text: AA
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#31CBD1
Analogous#D1317B, #D18731
Triadic#31D137, #3731D1
Split complementary#31D187, #317BD1
Tetradic#7BD131, #31CBD1, #8731D1
Tints, shades & saturation
Channel breakdown
R209
G55
B49
Red209 (82%)
Green55 (21.6%)
Blue49 (19.2%)
Hue2.25°
Saturation (HSL)63.49%
Lightness50.59%
Dominant channelRed
Hex per channelR D1 · G 37 · B 31
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