Colour
#1F3531
- #1F3531
- Cyan
- Dark
- Nearest: Dark slate grey
#1F3531 is a cyan with RGB values 31, 53, 49 and HSL 169°, 26%, 16%. It is a dark colour, so white text on it reaches 13:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.
Colour values
#1F3531#1F3531
HEX#1F3531
RGBrgb(31, 53, 49)
RGB (0–1)0.1216, 0.2078, 0.1922
RGB percentages12.2%, 20.8%, 19.2%
HSLhsl(169.1, 26.2%, 16.5%)
HSV / HSBhsv(169.1, 41.5%, 20.8%)
CMYK41.5%, 0%, 7.5%, 79.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,045,233
CSS custom property--colour: #1F3531;
Brightness & contrast
Relative luminance0.03059WCAG 2.x, 0 is black and 1 is white
Perceived brightness47 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 13.03:1
Contrast with white13.03:1WCAG normal text: AAA
Contrast with black1.61:1WCAG normal text: Fail
Greyscale equivalent#303030
Inverted#E0CACE
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text13.03:1WCAG large text: AAA
Contrast with black, large text1.61:1WCAG large text: Fail
Named colours
Hue familycyan
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#351F23
Analogous#1F3526, #1F2E35
Triadic#311F35, #35311F
Split complementary#351F2E, #35261F
Tetradic#261F35, #351F23, #2E351F
Tints, shades & saturation
Channel breakdown
R31
G53
B49
Red31 (12.2%)
Green53 (20.8%)
Blue49 (19.2%)
Hue169.09°
Saturation (HSL)26.19%
Lightness16.47%
Dominant channelGreen
Hex per channelR 1F · G 35 · B 31
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