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Recognised as Colour

#01CEF1

  • #01CEF1
  • Cyan
  • Light
  • Nearest: Sky blue

#01CEF1 is a cyan with RGB values 1, 206, 241 and HSL 189°, 99%, 47%. It is a light colour, so black text on it reaches 11.1:1 contrast (AAA for normal text). The nearest named colour is Sky blue.

Colour values

#01CEF1#01CEF1
HEX#01CEF1
RGBrgb(1, 206, 241)
RGB (0–1)0.0039, 0.8078, 0.9451
RGB percentages0.4%, 80.8%, 94.5%
HSLhsl(188.7, 99.2%, 47.5%)
HSV / HSBhsv(188.7, 99.6%, 94.5%)
CMYK99.6%, 14.5%, 0%, 5.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer118,513
CSS custom property--colour: #01CEF1;

Brightness & contrast

Relative luminance0.505WCAG 2.x, 0 is black and 1 is white
Perceived brightness177.6 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 11.1:1
Contrast with white1.89:1WCAG normal text: Fail
Contrast with black11.1:1WCAG normal text: AAA
Greyscale equivalent#A5A5A5
Inverted#FE310E

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#B6C7F3no red cones; affects about 1% of men; ΔE 34.3 from the original
Deuteranopia#9CB4F1no green cones; the most common form, about 1% of men; ΔE 36.4 from the original
Tritanopia#00DAD9no blue cones; rare, and affects men and women equally; ΔE 21.6 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text1.89:1WCAG large text: Fail
Contrast with black, large text11.1:1WCAG large text: AAA

Named colours

Sky blue · ΔE 17.3Dark turquoise · ΔE 18.6Deep skyblue · ΔE 18.6Light skyblue · ΔE 19.4Medium turquoise · ΔE 22Light seagreen · ΔE 26.2
Nearest named CSS colourSky blue (#87CEEB)ΔE 17.26, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#F12401
Analogous#01F19C, #0156F1
Triadic#F101CE, #CEF101
Split complementary#F10156, #F19C01
Tetradic#9C01F1, #F12401, #56F101

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#BFF5FF
Lighter +30%#8CEEFF
Lighter +20%#5AE6FE
Lighter +10%#27DFFE
Darker −10%#01A3BE
Darker −20%#01778B
Darker −30%#004C59
Darker −40%#002026
More saturated +25%#00CFF2
Less saturated −25%#1FB9D3

Channel breakdown

R1
G206
B241
Red1 (0.4%)
Green206 (80.8%)
Blue241 (94.5%)
Hue188.75°
Saturation (HSL)99.17%
Lightness47.45%
Dominant channelBlue
Hex per channelR 01 · G CE · B F1

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Every value on this page was computed from “01cef1” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.