Colour
#1B3937
- #1B3937
- Cyan
- Dark
- Nearest: Dark slate grey
#1B3937 is a cyan with RGB values 27, 57, 55 and HSL 176°, 36%, 16%. It is a dark colour, so white text on it reaches 12.4:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.
Colour values
#1B3937#1B3937
HEX#1B3937
RGBrgb(27, 57, 55)
RGB (0–1)0.1059, 0.2235, 0.2157
RGB percentages10.6%, 22.4%, 21.6%
HSLhsl(176, 35.7%, 16.5%)
HSV / HSBhsv(176, 52.6%, 22.4%)
CMYK52.6%, 0%, 3.5%, 77.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,784,119
CSS custom property--colour: #1B3937;
Brightness & contrast
Relative luminance0.03435WCAG 2.x, 0 is black and 1 is white
Perceived brightness49.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 12.45:1
Contrast with white12.45:1WCAG normal text: AAA
Contrast with black1.69:1WCAG normal text: Fail
Greyscale equivalent#323232
Inverted#E4C6C8
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text12.45:1WCAG large text: AAA
Contrast with black, large text1.69:1WCAG large text: Fail
Named colours
Hue familycyan
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#391B1D
Analogous#1B3928, #1B2C39
Triadic#371B39, #39371B
Split complementary#391B2C, #39281B
Tetradic#281B39, #391B1D, #2C391B
Tints, shades & saturation
Channel breakdown
R27
G57
B55
Red27 (10.6%)
Green57 (22.4%)
Blue55 (21.6%)
Hue176°
Saturation (HSL)35.71%
Lightness16.47%
Dominant channelGreen
Hex per channelR 1B · G 39 · B 37
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