Colour
#1C8989
- #1C8989
- Cyan
- Dark
- Nearest: Dark cyan
#1C8989 is a cyan with RGB values 28, 137, 137 and HSL 180°, 66%, 32%. It is a dark colour, so black text on it reaches 5:1 contrast (AA for normal text). The nearest named colour is Dark cyan.
Colour values
#1C8989#1C8989
HEX#1C8989
RGBrgb(28, 137, 137)
RGB (0–1)0.1098, 0.5373, 0.5373
RGB percentages11%, 53.7%, 53.7%
HSLhsl(180, 66.1%, 32.4%)
HSV / HSBhsv(180, 79.6%, 53.7%)
CMYK79.6%, 0%, 0%, 46.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,870,217
CSS custom property--colour: #1C8989;
Brightness & contrast
Relative luminance0.19944WCAG 2.x, 0 is black and 1 is white
Perceived brightness115.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 4.99:1
Contrast with white4.21:1WCAG normal text: Fail
Contrast with black4.99:1WCAG normal text: AA
Greyscale equivalent#727272
Inverted#E37676
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.21:1WCAG large text: AA
Contrast with black, large text4.99:1WCAG large text: AAA
Named colours
Hue familycyan
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#891C1C
Analogous#1C8952, #1C5289
Triadic#891C89, #89891C
Split complementary#891C52, #89521C
Tetradic#521C89, #891C1C, #52891C
Tints, shades & saturation
Channel breakdown
R28
G137
B137
Red28 (11%)
Green137 (53.7%)
Blue137 (53.7%)
Hue180°
Saturation (HSL)66.06%
Lightness32.35%
Dominant channelGreen and Blue
Hex per channelR 1C · G 89 · B 89
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