Recognised as Colour
#81102A
- #81102A
- Red
- Dark
- Nearest: Brown
#81102A is a red with RGB values 129, 16, 42 and HSL 346°, 78%, 28%. It is a dark colour, so white text on it reaches 10.3:1 contrast (AAA for normal text). The nearest named colour is Brown.
Colour values
#81102A#81102A
HEX#81102A
RGBrgb(129, 16, 42)
RGB (0–1)0.5059, 0.0627, 0.1647
RGB percentages50.6%, 6.3%, 16.5%
HSLhsl(346.2, 77.9%, 28.4%)
HSV / HSBhsv(346.2, 87.6%, 50.6%)
CMYK0%, 87.6%, 67.4%, 49.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer8,458,282
CSS custom property--colour: #81102A;
Brightness & contrast
Relative luminance0.05205WCAG 2.x, 0 is black and 1 is white
Perceived brightness73 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.29:1
Contrast with white10.29:1WCAG normal text: AAA
Contrast with black2.04:1WCAG normal text: Fail
Greyscale equivalent#2A2A2A
Inverted#7EEFD5
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text10.29:1WCAG large text: AAA
Contrast with black, large text2.04:1WCAG large text: Fail
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#108167
Analogous#811062, #812E10
Triadic#2A8110, #102A81
Split complementary#10812E, #106281
Tetradic#638110, #108167, #2F1081
Tints, shades & saturation
Channel breakdown
R129
G16
B42
Red129 (50.6%)
Green16 (6.3%)
Blue42 (16.5%)
Hue346.19°
Saturation (HSL)77.93%
Lightness28.43%
Dominant channelRed
Hex per channelR 81 · G 10 · B 2A
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