Colour
#AD102B
- #AD102B
- Red
- Dark
- Nearest: Firebrick
#AD102B is a red with RGB values 173, 16, 43 and HSL 350°, 83%, 37%. It is a dark colour, so white text on it reaches 7.3:1 contrast (AAA for normal text). The nearest named colour is Firebrick.
Colour values
#AD102B#AD102B
HEX#AD102B
RGBrgb(173, 16, 43)
RGB (0–1)0.6784, 0.0627, 0.1686
RGB percentages67.8%, 6.3%, 16.9%
HSLhsl(349.7, 83.1%, 37.1%)
HSV / HSBhsv(349.7, 90.8%, 67.8%)
CMYK0%, 90.8%, 75.1%, 32.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer11,341,867
CSS custom property--colour: #AD102B;
Brightness & contrast
Relative luminance0.09429WCAG 2.x, 0 is black and 1 is white
Perceived brightness96.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.28:1
Contrast with white7.28:1WCAG normal text: AAA
Contrast with black2.89:1WCAG normal text: Fail
Greyscale equivalent#333333
Inverted#52EFD4
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text7.28:1WCAG large text: AAA
Contrast with black, large text2.89:1WCAG large text: Fail
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#10AD92
Analogous#AD107A, #AD4310
Triadic#2BAD10, #102BAD
Split complementary#10AD43, #107AAD
Tetradic#7AAD10, #10AD92, #4310AD
Tints, shades & saturation
Channel breakdown
R173
G16
B43
Red173 (67.8%)
Green16 (6.3%)
Blue43 (16.9%)
Hue349.68°
Saturation (HSL)83.07%
Lightness37.06%
Dominant channelRed
Hex per channelR AD · G 10 · B 2B
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