Colour
#21544B
- #21544B
- Cyan
- Dark
- Nearest: Dark slate grey
#21544B is a cyan with RGB values 33, 84, 75 and HSL 169°, 44%, 23%. It is a dark colour, so white text on it reaches 8.6:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.
Colour values
#21544B#21544B
HEX#21544B
RGBrgb(33, 84, 75)
RGB (0–1)0.1294, 0.3294, 0.2941
RGB percentages12.9%, 32.9%, 29.4%
HSLhsl(169.4, 43.6%, 22.9%)
HSV / HSBhsv(169.4, 60.7%, 32.9%)
CMYK60.7%, 0%, 10.7%, 67.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,184,267
CSS custom property--colour: #21544B;
Brightness & contrast
Relative luminance0.07172WCAG 2.x, 0 is black and 1 is white
Perceived brightness71.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.63:1
Contrast with white8.63:1WCAG normal text: AAA
Contrast with black2.43:1WCAG normal text: Fail
Greyscale equivalent#494949
Inverted#DEABB4
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text8.63:1WCAG large text: AAA
Contrast with black, large text2.43:1WCAG large text: Fail
Named colours
Hue familycyan
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#54212A
Analogous#215432, #214354
Triadic#4B2154, #544B21
Split complementary#542143, #543221
Tetradic#322154, #54212A, #435421
Tints, shades & saturation
Channel breakdown
R33
G84
B75
Red33 (12.9%)
Green84 (32.9%)
Blue75 (29.4%)
Hue169.41°
Saturation (HSL)43.59%
Lightness22.94%
Dominant channelGreen
Hex per channelR 21 · G 54 · B 4B
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