Recognised as Colour
#151B1B
- #151B1B
- Cyan
- Dark
- Nearest: Black
#151B1B is a cyan with RGB values 21, 27, 27 and HSL 180°, 13%, 9%. It is a dark colour, so white text on it reaches 17.4:1 contrast (AAA for normal text). The nearest named colour is Black.
Colour values
#151B1B#151B1B
HEX#151B1B
RGBrgb(21, 27, 27)
RGB (0–1)0.0824, 0.1059, 0.1059
RGB percentages8.2%, 10.6%, 10.6%
HSLhsl(180, 12.5%, 9.4%)
HSV / HSBhsv(180, 22.2%, 10.6%)
CMYK22.2%, 0%, 0%, 89.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,383,195
CSS custom property--colour: #151B1B;
Brightness & contrast
Relative luminance0.01022WCAG 2.x, 0 is black and 1 is white
Perceived brightness25.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 17.43:1
Contrast with white17.43:1WCAG normal text: AAA
Contrast with black1.2:1WCAG normal text: Fail
Greyscale equivalent#1A1A1A
Inverted#EAE4E4
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text17.43:1WCAG large text: AAA
Contrast with black, large text1.2:1WCAG large text: Fail
Named colours
Hue familycyan
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#1B1515
Analogous#151B18, #15181B
Triadic#1B151B, #1B1B15
Split complementary#1B1518, #1B1815
Tetradic#18151B, #1B1515, #181B15
Tints, shades & saturation
Channel breakdown
R21
G27
B27
Red21 (8.2%)
Green27 (10.6%)
Blue27 (10.6%)
Hue180°
Saturation (HSL)12.5%
Lightness9.41%
Dominant channelGreen and Blue
Hex per channelR 15 · G 1B · B 1B
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