Colour
#37A4A7
- #37A4A7
- Cyan
- Dark
- Nearest: Dark cyan
#37A4A7 is a cyan with RGB values 55, 164, 167 and HSL 182°, 50%, 44%. It is a dark colour, so black text on it reaches 7:1 contrast (AAA for normal text). The nearest named colour is Dark cyan.
Colour values
#37A4A7#37A4A7
HEX#37A4A7
RGBrgb(55, 164, 167)
RGB (0–1)0.2157, 0.6431, 0.6549
RGB percentages21.6%, 64.3%, 65.5%
HSLhsl(181.6, 50.5%, 43.5%)
HSV / HSBhsv(181.6, 67.1%, 65.5%)
CMYK67.1%, 1.8%, 0%, 34.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,646,631
CSS custom property--colour: #37A4A7;
Brightness & contrast
Relative luminance0.30153WCAG 2.x, 0 is black and 1 is white
Perceived brightness141 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 7.03:1
Contrast with white2.99:1WCAG normal text: Fail
Contrast with black7.03:1WCAG normal text: AAA
Greyscale equivalent#8D8D8D
Inverted#C85B58
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.99:1WCAG large text: Fail
Contrast with black, large text7.03:1WCAG large text: AAA
Named colours
Hue familycyan
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#A73A37
Analogous#37A772, #376CA7
Triadic#A737A4, #A4A737
Split complementary#A7376C, #A77237
Tetradic#7237A7, #A73A37, #6CA737
Tints, shades & saturation
Channel breakdown
R55
G164
B167
Red55 (21.6%)
Green164 (64.3%)
Blue167 (65.5%)
Hue181.61°
Saturation (HSL)50.45%
Lightness43.53%
Dominant channelBlue
Hex per channelR 37 · G A4 · B A7
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