Recognised as Colour
#578E8B
- #578E8B
- Cyan
- Dark
- Nearest: Cadetblue
#578E8B is a cyan with RGB values 87, 142, 139 and HSL 177°, 24%, 45%. It is a dark colour, so black text on it reaches 5.6:1 contrast (AA for normal text). The nearest named colour is Cadetblue.
Colour values
#578E8B#578E8B
HEX#578E8B
RGBrgb(87, 142, 139)
RGB (0–1)0.3412, 0.5569, 0.5451
RGB percentages34.1%, 55.7%, 54.5%
HSLhsl(176.7, 24%, 44.9%)
HSV / HSBhsv(176.7, 38.7%, 55.7%)
CMYK38.7%, 0%, 2.1%, 44.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,738,123
CSS custom property--colour: #578E8B;
Brightness & contrast
Relative luminance0.23236WCAG 2.x, 0 is black and 1 is white
Perceived brightness127.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.65:1
Contrast with white3.72:1WCAG normal text: Fail
Contrast with black5.65:1WCAG normal text: AA
Greyscale equivalent#828282
Inverted#A87174
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.72:1WCAG large text: AA
Contrast with black, large text5.65:1WCAG large text: AAA
Named colours
Hue familycyan
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#8E575A
Analogous#578E70, #57758E
Triadic#8B578E, #8E8B57
Split complementary#8E5775, #8E7057
Tetradic#70578E, #8E575A, #758E57
Tints, shades & saturation
Channel breakdown
R87
G142
B139
Red87 (34.1%)
Green142 (55.7%)
Blue139 (54.5%)
Hue176.73°
Saturation (HSL)24.02%
Lightness44.9%
Dominant channelGreen
Hex per channelR 57 · G 8E · B 8B
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