Colour
#21312A
- #21312A
- Cyan
- Dark
- Nearest: Dark slate grey
#21312A is a cyan with RGB values 33, 49, 42 and HSL 154°, 20%, 16%. It is a dark colour, so white text on it reaches 13.7:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.
Colour values
#21312A#21312A
HEX#21312A
RGBrgb(33, 49, 42)
RGB (0–1)0.1294, 0.1922, 0.1647
RGB percentages12.9%, 19.2%, 16.5%
HSLhsl(153.8, 19.5%, 16.1%)
HSV / HSBhsv(153.8, 32.7%, 19.2%)
CMYK32.7%, 0%, 14.3%, 80.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,175,274
CSS custom property--colour: #21312A;
Brightness & contrast
Relative luminance0.02687WCAG 2.x, 0 is black and 1 is white
Perceived brightness44 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 13.66:1
Contrast with white13.66:1WCAG normal text: AAA
Contrast with black1.54:1WCAG normal text: Fail
Greyscale equivalent#2D2D2D
Inverted#DECED5
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text13.66:1WCAG large text: AAA
Contrast with black, large text1.54:1WCAG large text: Fail
Named colours
Hue familycyan
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#312128
Analogous#213122, #213031
Triadic#2A2131, #312A21
Split complementary#312130, #312221
Tetradic#222131, #312128, #303121
Tints, shades & saturation
Channel breakdown
R33
G49
B42
Red33 (12.9%)
Green49 (19.2%)
Blue42 (16.5%)
Hue153.75°
Saturation (HSL)19.51%
Lightness16.08%
Dominant channelGreen
Hex per channelR 21 · G 31 · B 2A
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