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Recognised as Colour

#57BDBD

  • #57BDBD
  • Cyan
  • Dark
  • Nearest: Medium turquoise

#57BDBD is a cyan with RGB values 87, 189, 189 and HSL 180°, 44%, 54%. It is a dark colour, so black text on it reaches 9.4:1 contrast (AAA for normal text). The nearest named colour is Medium turquoise.

Colour values

#57BDBD#57BDBD
HEX#57BDBD
RGBrgb(87, 189, 189)
RGB (0–1)0.3412, 0.7412, 0.7412
RGB percentages34.1%, 74.1%, 74.1%
HSLhsl(180, 43.6%, 54.1%)
HSV / HSBhsv(180, 54%, 74.1%)
CMYK54%, 0%, 0%, 25.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,750,205
CSS custom property--colour: #57BDBD;

Brightness & contrast

Relative luminance0.42096WCAG 2.x, 0 is black and 1 is white
Perceived brightness165.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 9.42:1
Contrast with white2.23:1WCAG normal text: Fail
Contrast with black9.42:1WCAG normal text: AAA
Greyscale equivalent#A7A7A7
Inverted#A84242

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#B2B5BDno red cones; affects about 1% of men; ΔE 30.4 from the original
Deuteranopia#A1A8BEno green cones; the most common form, about 1% of men; ΔE 31.7 from the original
Tritanopia#00C2BDno blue cones; rare, and affects men and women equally; ΔE 11.2 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text2.23:1WCAG large text: Fail
Contrast with black, large text9.42:1WCAG large text: AAA

Named colours

Medium turquoise · ΔE 10Light seagreen · ΔE 10Dark turquoise · ΔE 12.3Cadetblue · ΔE 13.9Turquoise · ΔE 18.6Dark cyan · ΔE 18.8
Nearest named CSS colourMedium turquoise (#48D1CC)ΔE 9.96, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#BD5757
Analogous#57BD8A, #578ABD
Triadic#BD57BD, #BDBD57
Split complementary#BD578A, #BD8A57
Tetradic#8A57BD, #BD5757, #8ABD57

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#E9F7F7
Lighter +30%#C5E8E8
Lighter +20%#A0DADA
Lighter +10%#7CCBCB
Darker −10%#3FA2A2
Darker −20%#317D7D
Darker −30%#235858
Darker −40%#143434
More saturated +25%#3ADADA
Less saturated −25%#74A0A0

Channel breakdown

R87
G189
B189
Red87 (34.1%)
Green189 (74.1%)
Blue189 (74.1%)
Hue180°
Saturation (HSL)43.59%
Lightness54.12%
Dominant channelGreen and Blue
Hex per channelR 57 · G BD · B BD

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