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Recognised as Colour

#40E8FF

  • #40E8FF
  • Cyan
  • Light
  • Nearest: Dark turquoise

#40E8FF is a cyan with RGB values 64, 232, 255 and HSL 187°, 100%, 63%. It is a light colour, so black text on it reaches 14.2:1 contrast (AAA for normal text). The nearest named colour is Dark turquoise.

Colour values

#40E8FF#40E8FF
HEX#40E8FF
RGBrgb(64, 232, 255)
RGB (0–1)0.251, 0.9098, 1
RGB percentages25.1%, 91%, 100%
HSLhsl(187.2, 100%, 62.5%)
HSV / HSBhsv(187.2, 74.9%, 100%)
CMYK74.9%, 9%, 0%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,253,951
CSS custom property--colour: #40E8FF;

Brightness & contrast

Relative luminance0.66023WCAG 2.x, 0 is black and 1 is white
Perceived brightness200.6 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 14.2:1
Contrast with white1.48:1WCAG normal text: Fail
Contrast with black14.2:1WCAG normal text: AAA
Greyscale equivalent#C6C6C6
Inverted#BF1700

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#D3DFFFno red cones; affects about 1% of men; ΔE 37.5 from the original
Deuteranopia#B9CCFFno green cones; the most common form, about 1% of men; ΔE 39.4 from the original
Tritanopia#00F3EFno blue cones; rare, and affects men and women equally; ΔE 17.6 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text1.48:1WCAG large text: Fail
Contrast with black, large text14.2:1WCAG large text: AAA

Named colours

Dark turquoise · ΔE 14.9Medium turquoise · ΔE 17.3Aqua · ΔE 17.6Cyan · ΔE 17.6Sky blue · ΔE 20.5Turquoise · ΔE 21.9
Nearest named CSS colourDark turquoise (#00CED1)ΔE 14.89, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FF5740
Analogous#40FFB6, #4089FF
Triadic#FF40E8, #E8FF40
Split complementary#FF4088, #FFB640
Tetradic#B740FF, #FF5740, #89FF40

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#D9FAFF
Lighter +20%#A6F4FF
Lighter +10%#73EEFF
Darker −10%#0DE2FF
Darker −20%#00BFD9
Darker −30%#0092A6
Darker −40%#006573
More saturated +25%#40E8FF
Less saturated −25%#58D6E7

Channel breakdown

R64
G232
B255
Red64 (25.1%)
Green232 (91%)
Blue255 (100%)
Hue187.23°
Saturation (HSL)100%
Lightness62.55%
Dominant channelBlue
Hex per channelR 40 · G E8 · B FF

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Every value on this page was computed from “40e8ff” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.