Colour
#178E7C
- #178E7C
- Cyan
- Dark
- Nearest: Dark cyan
#178E7C is a cyan with RGB values 23, 142, 124 and HSL 171°, 72%, 32%. It is a dark colour, so black text on it reaches 5.2:1 contrast (AA for normal text). The nearest named colour is Dark cyan.
Colour values
#178E7C#178E7C
HEX#178E7C
RGBrgb(23, 142, 124)
RGB (0–1)0.0902, 0.5569, 0.4863
RGB percentages9%, 55.7%, 48.6%
HSLhsl(170.9, 72.1%, 32.4%)
HSV / HSBhsv(170.9, 83.8%, 55.7%)
CMYK83.8%, 0%, 12.7%, 44.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,543,804
CSS custom property--colour: #178E7C;
Brightness & contrast
Relative luminance0.20983WCAG 2.x, 0 is black and 1 is white
Perceived brightness117.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.2:1
Contrast with white4.04:1WCAG normal text: Fail
Contrast with black5.2:1WCAG normal text: AA
Greyscale equivalent#737373
Inverted#E87183
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.04:1WCAG large text: AA
Contrast with black, large text5.2:1WCAG large text: AAA
Named colours
Hue familycyan
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#8E1729
Analogous#178E41, #17648E
Triadic#7C178E, #8E7C17
Split complementary#8E1765, #8E4117
Tetradic#40178E, #8E1729, #648E17
Tints, shades & saturation
Channel breakdown
R23
G142
B124
Red23 (9%)
Green142 (55.7%)
Blue124 (48.6%)
Hue170.92°
Saturation (HSL)72.12%
Lightness32.35%
Dominant channelGreen
Hex per channelR 17 · G 8E · B 7C
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