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Colour

#66CECF

  • #66CECF
  • Cyan
  • Light
  • Nearest: Medium turquoise

#66CECF is a cyan with RGB values 102, 206, 207 and HSL 181°, 52%, 61%. It is a light colour, so black text on it reaches 11.3:1 contrast (AAA for normal text). The nearest named colour is Medium turquoise.

Colour values

#66CECF#66CECF
HEX#66CECF
RGBrgb(102, 206, 207)
RGB (0–1)0.4, 0.8078, 0.8118
RGB percentages40%, 80.8%, 81.2%
HSLhsl(180.6, 52.2%, 60.6%)
HSV / HSBhsv(180.6, 50.7%, 81.2%)
CMYK50.7%, 0.5%, 0%, 18.8%naive device-independent conversion; real print needs an ICC profile
24-bit integer6,737,615
CSS custom property--colour: #66CECF;

Brightness & contrast

Relative luminance0.51472WCAG 2.x, 0 is black and 1 is white
Perceived brightness181.4 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 11.29:1
Contrast with white1.86:1WCAG normal text: Fail
Contrast with black11.29:1WCAG normal text: AAA
Greyscale equivalent#B8B8B8
Inverted#993130

Colour vision & accessibility

Protanopia#C2C6CFno red cones; affects about 1% of men; ΔE 30.6 from the original
Deuteranopia#B1B8D0no green cones; the most common form, about 1% of men; ΔE 32.4 from the original
Tritanopia#16D4CEno blue cones; rare, and affects men and women equally; ΔE 13.2 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text1.86:1WCAG large text: Fail
Contrast with black, large text11.29:1WCAG large text: AAA

Named colours

Nearest named CSS colourMedium turquoise (#48D1CC)ΔE 7.73, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

Complementary#CF6766
Analogous#66CF9B, #669ACF
Triadic#CF66CE, #CECF66
Split complementary#CF669A, #CF9B66
Tetradic#9C66CF, #CF6766, #9ACF66

Tints, shades & saturation

Lighter +40%#FFFFFF
Lighter +30%#DAF3F4
Lighter +20%#B4E7E7
Lighter +10%#8DDADB
Darker −10%#3FC2C3
Darker −20%#319D9E
Darker −30%#257677
Darker −40%#194F50
More saturated +25%#4DE7E8
Less saturated −25%#7FB5B6

Channel breakdown

R102
G206
B207
Red102 (40%)
Green206 (80.8%)
Blue207 (81.2%)
Hue180.57°
Saturation (HSL)52.24%
Lightness60.59%
Dominant channelBlue
Hex per channelR 66 · G CE · B CF

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Every value on this page was computed from “66cecf” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.