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Recognised as Colour

#57B9BD

  • #57B9BD
  • Cyan
  • Dark
  • Nearest: Light seagreen

#57B9BD is a cyan with RGB values 87, 185, 189 and HSL 182°, 44%, 54%. It is a dark colour, so black text on it reaches 9.1:1 contrast (AAA for normal text). The nearest named colour is Light seagreen.

Colour values

#57B9BD#57B9BD
HEX#57B9BD
RGBrgb(87, 185, 189)
RGB (0–1)0.3412, 0.7255, 0.7412
RGB percentages34.1%, 72.5%, 74.1%
HSLhsl(182.4, 43.6%, 54.1%)
HSV / HSBhsv(182.4, 54%, 74.1%)
CMYK54%, 2.1%, 0%, 25.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,749,181
CSS custom property--colour: #57B9BD;

Brightness & contrast

Relative luminance0.40398WCAG 2.x, 0 is black and 1 is white
Perceived brightness162.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 9.08:1
Contrast with white2.31:1WCAG normal text: Fail
Contrast with black9.08:1WCAG normal text: AAA
Greyscale equivalent#A4A4A4
Inverted#A84642

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#AEB2BDno red cones; affects about 1% of men; ΔE 28.7 from the original
Deuteranopia#9DA5BEno green cones; the most common form, about 1% of men; ΔE 30.1 from the original
Tritanopia#00BFBAno blue cones; rare, and affects men and women equally; ΔE 12.9 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text2.31:1WCAG large text: Fail
Contrast with black, large text9.08:1WCAG large text: AAA

Named colours

Light seagreen · ΔE 11.7Cadetblue · ΔE 12.1Medium turquoise · ΔE 12.5Dark turquoise · ΔE 14Dark cyan · ΔE 17.9Sky blue · ΔE 18.9
Nearest named CSS colourLight seagreen (#20B2AA)ΔE 11.7, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#BD5B57
Analogous#57BD8E, #5786BD
Triadic#BD57B9, #B9BD57
Split complementary#BD5786, #BD8E57
Tetradic#8E57BD, #BD5B57, #86BD57

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#E9F6F7
Lighter +30%#C5E7E8
Lighter +20%#A0D8DA
Lighter +10%#7CC8CB
Darker −10%#3F9EA2
Darker −20%#317A7D
Darker −30%#235658
Darker −40%#143234
More saturated +25%#3AD4DA
Less saturated −25%#749EA0

Channel breakdown

R87
G185
B189
Red87 (34.1%)
Green185 (72.5%)
Blue189 (74.1%)
Hue182.35°
Saturation (HSL)43.59%
Lightness54.12%
Dominant channelBlue
Hex per channelR 57 · G B9 · B BD

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Every value on this page was computed from “57b9bd” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.