Colour
#21493F
- #21493F
- Cyan
- Dark
- Nearest: Dark slate grey
#21493F is a cyan with RGB values 33, 73, 63 and HSL 165°, 38%, 21%. It is a dark colour, so white text on it reaches 10.1:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.
Colour values
#21493F#21493F
HEX#21493F
RGBrgb(33, 73, 63)
RGB (0–1)0.1294, 0.2863, 0.2471
RGB percentages12.9%, 28.6%, 24.7%
HSLhsl(165, 37.7%, 20.8%)
HSV / HSBhsv(165, 54.8%, 28.6%)
CMYK54.8%, 0%, 13.7%, 71.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,181,439
CSS custom property--colour: #21493F;
Brightness & contrast
Relative luminance0.05447WCAG 2.x, 0 is black and 1 is white
Perceived brightness62.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.05:1
Contrast with white10.05:1WCAG normal text: AAA
Contrast with black2.09:1WCAG normal text: Fail
Greyscale equivalent#404040
Inverted#DEB6C0
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text10.05:1WCAG large text: AAA
Contrast with black, large text2.09:1WCAG large text: Fail
Named colours
Hue familycyan
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#49212B
Analogous#21492B, #213F49
Triadic#3F2149, #493F21
Split complementary#49213F, #492B21
Tetradic#2B2149, #49212B, #3F4921
Tints, shades & saturation
Channel breakdown
R33
G73
B63
Red33 (12.9%)
Green73 (28.6%)
Blue63 (24.7%)
Hue165°
Saturation (HSL)37.74%
Lightness20.78%
Dominant channelGreen
Hex per channelR 21 · G 49 · B 3F
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