Colour
#21756B
- #21756B
- Cyan
- Dark
- Nearest: Teal
#21756B is a cyan with RGB values 33, 117, 107 and HSL 173°, 56%, 29%. It is a dark colour, so white text on it reaches 5.5:1 contrast (AA for normal text). The nearest named colour is Teal.
Colour values
#21756B#21756B
HEX#21756B
RGBrgb(33, 117, 107)
RGB (0–1)0.1294, 0.4588, 0.4196
RGB percentages12.9%, 45.9%, 42%
HSLhsl(172.9, 56%, 29.4%)
HSV / HSBhsv(172.9, 71.8%, 45.9%)
CMYK71.8%, 0%, 8.5%, 54.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,192,747
CSS custom property--colour: #21756B;
Brightness & contrast
Relative luminance0.14107WCAG 2.x, 0 is black and 1 is white
Perceived brightness98.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.5:1
Contrast with white5.5:1WCAG normal text: AA
Contrast with black3.82:1WCAG normal text: Fail
Greyscale equivalent#626262
Inverted#DE8A94
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text5.5:1WCAG large text: AAA
Contrast with black, large text3.82:1WCAG large text: AA
Named colours
Hue familycyan
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#75212B
Analogous#217541, #215575
Triadic#6B2175, #756B21
Split complementary#752155, #754121
Tetradic#412175, #75212B, #557521
Tints, shades & saturation
Channel breakdown
R33
G117
B107
Red33 (12.9%)
Green117 (45.9%)
Blue107 (42%)
Hue172.86°
Saturation (HSL)56%
Lightness29.41%
Dominant channelGreen
Hex per channelR 21 · G 75 · B 6B
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