Recognised as Colour
#AB1017
- #AB1017
- Red
- Dark
- Nearest: Firebrick
#AB1017 is a red with RGB values 171, 16, 23 and HSL 357°, 83%, 37%. It is a dark colour, so white text on it reaches 7.5:1 contrast (AAA for normal text). The nearest named colour is Firebrick.
Colour values
#AB1017#AB1017
HEX#AB1017
RGBrgb(171, 16, 23)
RGB (0–1)0.6706, 0.0627, 0.0902
RGB percentages67.1%, 6.3%, 9%
HSLhsl(357.3, 82.9%, 36.7%)
HSV / HSBhsv(357.3, 90.6%, 67.1%)
CMYK0%, 90.6%, 86.5%, 32.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer11,210,775
CSS custom property--colour: #AB1017;
Brightness & contrast
Relative luminance0.0909WCAG 2.x, 0 is black and 1 is white
Perceived brightness94.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.45:1
Contrast with white7.45:1WCAG normal text: AAA
Contrast with black2.82:1WCAG normal text: Fail
Greyscale equivalent#313131
Inverted#54EFE8
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text7.45:1WCAG large text: AAA
Contrast with black, large text2.82:1WCAG large text: Fail
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#10ABA4
Analogous#AB1065, #AB5710
Triadic#17AB10, #1017AB
Split complementary#10AB57, #1065AB
Tetradic#64AB10, #10ABA4, #5610AB
Tints, shades & saturation
Channel breakdown
R171
G16
B23
Red171 (67.1%)
Green16 (6.3%)
Blue23 (9%)
Hue357.29°
Saturation (HSL)82.89%
Lightness36.67%
Dominant channelRed
Hex per channelR AB · G 10 · B 17
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