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Recognised as Colour

#57AA81

  • #57AA81
  • Cyan
  • Dark
  • Nearest: Medium aquamarine

#57AA81 is a cyan with RGB values 87, 170, 129 and HSL 150°, 33%, 50%. It is a dark colour, so black text on it reaches 7.5:1 contrast (AAA for normal text). The nearest named colour is Medium aquamarine.

Colour values

#57AA81#57AA81
HEX#57AA81
RGBrgb(87, 170, 129)
RGB (0–1)0.3412, 0.6667, 0.5059
RGB percentages34.1%, 66.7%, 50.6%
HSLhsl(150.4, 32.8%, 50.4%)
HSV / HSBhsv(150.4, 48.8%, 66.7%)
CMYK48.8%, 0%, 24.1%, 33.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,745,281
CSS custom property--colour: #57AA81;

Brightness & contrast

Relative luminance0.32361WCAG 2.x, 0 is black and 1 is white
Perceived brightness145.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 7.47:1
Contrast with white2.81:1WCAG normal text: Fail
Contrast with black7.47:1WCAG normal text: AAA
Greyscale equivalent#959595
Inverted#A8557E

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#A89F7Fno red cones; affects about 1% of men; ΔE 33.4 from the original
Deuteranopia#9C9783no green cones; the most common form, about 1% of men; ΔE 33.4 from the original
Tritanopia#3FA99Fno blue cones; rare, and affects men and women equally; ΔE 17.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text2.81:1WCAG large text: Fail
Contrast with black, large text7.47:1WCAG large text: AAA

Named colours

Medium aquamarine · ΔE 13.5Sea green · ΔE 14.5Dark seagreen · ΔE 14.8Medium seagreen · ΔE 17.1Light seagreen · ΔE 20.1Dark cyan · ΔE 25.6
Nearest named CSS colourMedium aquamarine (#66CDAA)ΔE 13.53, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#AA5780
Analogous#57AA58, #57AAAA
Triadic#8157AA, #AA8157
Split complementary#AA57AA, #AA5757
Tetradic#5757AA, #AA5780, #AAAA57

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#DEEFE7
Lighter +30%#BDDDCD
Lighter +20%#9BCCB4
Lighter +10%#79BB9A
Darker −10%#458967
Darker −20%#34674E
Darker −30%#234534
Darker −40%#12231B
More saturated +25%#37CA81
Less saturated −25%#778A81

Channel breakdown

R87
G170
B129
Red87 (34.1%)
Green170 (66.7%)
Blue129 (50.6%)
Hue150.36°
Saturation (HSL)32.81%
Lightness50.39%
Dominant channelGreen
Hex per channelR 57 · G AA · B 81

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Every value on this page was computed from “57aa81” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.