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Recognised as Colour

#57B49B

  • #57B49B
  • Cyan
  • Dark
  • Nearest: Medium aquamarine

#57B49B is a cyan with RGB values 87, 180, 155 and HSL 164°, 38%, 52%. It is a dark colour, so black text on it reaches 8.4:1 contrast (AAA for normal text). The nearest named colour is Medium aquamarine.

Colour values

#57B49B#57B49B
HEX#57B49B
RGBrgb(87, 180, 155)
RGB (0–1)0.3412, 0.7059, 0.6078
RGB percentages34.1%, 70.6%, 60.8%
HSLhsl(163.9, 38.3%, 52.4%)
HSV / HSBhsv(163.9, 51.7%, 70.6%)
CMYK51.7%, 0%, 13.9%, 29.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,747,867
CSS custom property--colour: #57B49B;

Brightness & contrast

Relative luminance0.37035WCAG 2.x, 0 is black and 1 is white
Perceived brightness155 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 8.41:1
Contrast with white2.5:1WCAG normal text: Fail
Contrast with black8.41:1WCAG normal text: AAA
Greyscale equivalent#9E9E9E
Inverted#A84B64

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#AFAA9Ano red cones; affects about 1% of men; ΔE 33.2 from the original
Deuteranopia#A0A09Dno green cones; the most common form, about 1% of men; ΔE 33.4 from the original
Tritanopia#2DB6ADno blue cones; rare, and affects men and women equally; ΔE 10.6 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text2.5:1WCAG large text: Fail
Contrast with black, large text8.41:1WCAG large text: AAA

Named colours

Medium aquamarine · ΔE 10.3Light seagreen · ΔE 11.4Medium turquoise · ΔE 16.3Dark seagreen · ΔE 17.6Turquoise · ΔE 19.3Cadetblue · ΔE 19.4
Nearest named CSS colourMedium aquamarine (#66CDAA)ΔE 10.33, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#B45770
Analogous#57B46D, #579FB4
Triadic#9B57B4, #B49B57
Split complementary#B4579F, #B46D57
Tetradic#6D57B4, #B45770, #9FB457

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#E4F3EF
Lighter +30%#C1E3DA
Lighter +20%#9ED3C5
Lighter +10%#7AC4B0
Darker −10%#43957F
Darker −20%#337261
Darker −30%#234F43
Darker −40%#132C25
More saturated +25%#39D2A9
Less saturated −25%#75968D

Channel breakdown

R87
G180
B155
Red87 (34.1%)
Green180 (70.6%)
Blue155 (60.8%)
Hue163.87°
Saturation (HSL)38.27%
Lightness52.35%
Dominant channelGreen
Hex per channelR 57 · G B4 · B 9B

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Every value on this page was computed from “57b49b” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.