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Recognised as Colour

#57E1FF

  • #57E1FF
  • Cyan
  • Light
  • Nearest: Sky blue

#57E1FF is a cyan with RGB values 87, 225, 255 and HSL 191°, 100%, 67%. It is a light colour, so black text on it reaches 13.6:1 contrast (AAA for normal text). The nearest named colour is Sky blue.

Colour values

#57E1FF#57E1FF
HEX#57E1FF
RGBrgb(87, 225, 255)
RGB (0–1)0.3412, 0.8824, 1
RGB percentages34.1%, 88.2%, 100%
HSLhsl(190.7, 100%, 67.1%)
HSV / HSBhsv(190.7, 65.9%, 100%)
CMYK65.9%, 11.8%, 0%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,759,487
CSS custom property--colour: #57E1FF;

Brightness & contrast

Relative luminance0.63097WCAG 2.x, 0 is black and 1 is white
Perceived brightness198.5 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 13.62:1
Contrast with white1.54:1WCAG normal text: Fail
Contrast with black13.62:1WCAG normal text: AAA
Greyscale equivalent#C6C6C6
Inverted#A81E00

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#CCDAFFno red cones; affects about 1% of men; ΔE 31.8 from the original
Deuteranopia#B4C8FFno green cones; the most common form, about 1% of men; ΔE 33.9 from the original
Tritanopia#00ECEAno blue cones; rare, and affects men and women equally; ΔE 22.1 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text1.54:1WCAG large text: Fail
Contrast with black, large text13.62:1WCAG large text: AAA

Named colours

Sky blue · ΔE 14.7Light skyblue · ΔE 18Dark turquoise · ΔE 18.8Medium turquoise · ΔE 20.6Pale turquoise · ΔE 22Light blue · ΔE 22.3
Nearest named CSS colourSky blue (#87CEEB)ΔE 14.66, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FF7557
Analogous#57FFC9, #578DFF
Triadic#FF57E1, #E1FF57
Split complementary#FF578D, #FFC957
Tetradic#C957FF, #FF7557, #8DFF57

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#F0FCFF
Lighter +20%#BDF3FF
Lighter +10%#8AEAFF
Darker −10%#24D8FF
Darker −20%#00C5F0
Darker −30%#009BBD
Darker −40%#00718A
More saturated +25%#57E1FF
Less saturated −25%#6CD3EA

Channel breakdown

R87
G225
B255
Red87 (34.1%)
Green225 (88.2%)
Blue255 (100%)
Hue190.71°
Saturation (HSL)100%
Lightness67.06%
Dominant channelBlue
Hex per channelR 57 · G E1 · B FF

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Every value on this page was computed from “57e1ff” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.