Colour

#578C81

#578C81
Cyan
Dark
Nearest: Cadetblue

#578C81 is a cyan with RGB values 87, 140, 129 and HSL 168°, 23%, 45%. It is a dark colour, so black text on it reaches 5.5:1 contrast (AA for normal text). The nearest named colour is Cadetblue.

Colour values

#578C81#578C81

HEX#578C81

RGBrgb(87, 140, 129)

RGB (0–1)0.3412, 0.549, 0.5059

RGB percentages34.1%, 54.9%, 50.6%

HSLhsl(167.5, 23.3%, 44.5%)

HSV / HSBhsv(167.5, 37.9%, 54.9%)

CMYK37.9%, 0%, 7.9%, 45.1%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer5,737,601

CSS custom property--colour: #578C81;

Brightness & contrast

Relative luminance0.22367WCAG 2.x, 0 is black and 1 is white

Perceived brightness125.2 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.47:1

Contrast with white3.84:1WCAG normal text: Fail

Contrast with black5.47:1WCAG normal text: AA

Greyscale equivalent#808080

Inverted#A8737E

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#888681no red cones; affects about 1% of men; ΔE 20.3 from the original

Deuteranopia#7F7F82no green cones; the most common form, about 1% of men; ΔE 21 from the original

Tritanopia#458E89no blue cones; rare, and affects men and women equally; ΔE 5.9 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text3.84:1WCAG large text: AA

Contrast with black, large text5.47:1WCAG large text: AAA

Named colours

Cadetblue · ΔE 10.3 Teal · ΔE 13.7 Dark cyan · ΔE 14.1 Gray · ΔE 20.3 Slate grey · ΔE 21.2 Light slate grey · ΔE 21.4

Nearest named CSS colourCadetblue (#5F9EA0)ΔE 10.27, a distinctly different colour

Hue familycyan

CSS keyword usableNo exact keyword

Colour harmonies

base +30°+90°+120°+180°+210°+240°+270°+330°

Complementary#8C5762

Analogous#578C66, #577D8C

Triadic#81578C, #8C8157

Split complementary#8C577D, #8C6657

Tetradic#66578C, #8C5762, #7D8C57

Tints, shades & saturation

+40%+30%+20%+10%base -10%-20%-30%-40%

Lighter +40%#CEE1DD

Lighter +30%#AFCDC7

Lighter +20%#8FBAB1

Lighter +10%#70A69B

Darker −10%#436D64

Darker −20%#304D47

Darker −30%#1C2E2A

Darker −40%#090E0D

More saturated +25%#3BA892

Less saturated −25%#727272

Channel breakdown

R87

G140

B129

Red87 (34.1%)

Green140 (54.9%)

Blue129 (50.6%)

Hue167.55°

Saturation (HSL)23.35%

Lightness44.51%

Dominant channelGreen

Hex per channelR 57 · G 8C · B 81

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

#578C81

Colour values

Brightness & contrast

Colour vision & accessibility

Named colours

Colour harmonies

Tints, shades & saturation

Channel breakdown

Keep nerding

Harmonies

Lighter and darker

Similar named colours

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