Colour
#5B3737
- #5B3737
- Red
- Dark
- Nearest: Dim grey
#5B3737 is a red with RGB values 91, 55, 55 and HSL 0°, 25%, 29%. It is a dark colour, so white text on it reaches 10.3:1 contrast (AAA for normal text). The nearest named colour is Dim grey.
Colour values
#5B3737#5B3737
HEX#5B3737
RGBrgb(91, 55, 55)
RGB (0–1)0.3569, 0.2157, 0.2157
RGB percentages35.7%, 21.6%, 21.6%
HSLhsl(0, 24.7%, 28.6%)
HSV / HSBhsv(0, 39.6%, 35.7%)
CMYK0%, 39.6%, 39.6%, 64.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,977,911
CSS custom property--colour: #5B3737;
Brightness & contrast
Relative luminance0.05232WCAG 2.x, 0 is black and 1 is white
Perceived brightness67.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.26:1
Contrast with white10.26:1WCAG normal text: AAA
Contrast with black2.05:1WCAG normal text: Fail
Greyscale equivalent#3F3F3F
Inverted#A4C8C8
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text10.26:1WCAG large text: AAA
Contrast with black, large text2.05:1WCAG large text: Fail
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#375B5B
Analogous#5B3749, #5B4937
Triadic#375B37, #37375B
Split complementary#375B49, #37495B
Tetradic#495B37, #375B5B, #49375B
Tints, shades & saturation
Channel breakdown
R91
G55
B55
Red91 (35.7%)
Green55 (21.6%)
Blue55 (21.6%)
Hue0°
Saturation (HSL)24.66%
Lightness28.63%
Dominant channelRed
Hex per channelR 5B · G 37 · B 37
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