Colour

#66CDCC

#66CDCC
Cyan
Light
Nearest: Medium turquoise

#66CDCC is a cyan with RGB values 102, 205, 204 and HSL 179°, 51%, 60%. It is a light colour, so black text on it reaches 11.2:1 contrast (AAA for normal text). The nearest named colour is Medium turquoise.

Colour values

#66CDCC#66CDCC

HEX#66CDCC

RGBrgb(102, 205, 204)

RGB (0–1)0.4, 0.8039, 0.8

RGB percentages40%, 80.4%, 80%

HSLhsl(179.4, 50.7%, 60.2%)

HSV / HSBhsv(179.4, 50.2%, 80.4%)

CMYK50.2%, 0%, 0.5%, 19.6%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer6,737,356

CSS custom property--colour: #66CDCC;

Brightness & contrast

Relative luminance0.50847WCAG 2.x, 0 is black and 1 is white

Perceived brightness180.3 of 255ITU-R BT.601 weighting

Light or darkLight

Best text colour on this backgroundBlackcontrast 11.17:1

Contrast with white1.88:1WCAG normal text: Fail

Contrast with black11.17:1WCAG normal text: AAA

Greyscale equivalent#B7B7B7

Inverted#993233

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#C2C4CCno red cones; affects about 1% of men; ΔE 31.3 from the original

Deuteranopia#B0B7CDno green cones; the most common form, about 1% of men; ΔE 32.3 from the original

Tritanopia#1DD2CCno blue cones; rare, and affects men and women equally; ΔE 12.2 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text1.88:1WCAG large text: Fail

Contrast with black, large text11.17:1WCAG large text: AAA

Named colours

Medium turquoise · ΔE 7.3 Dark turquoise · ΔE 11.2 Light seagreen · ΔE 13.3 Turquoise · ΔE 15.5 Pale turquoise · ΔE 17.2 Powder blue · ΔE 18.6

Nearest named CSS colourMedium turquoise (#48D1CC)ΔE 7.31, clearly different but related

Hue familycyan

CSS keyword usableNo exact keyword

Colour harmonies

base +30°+90°+120°+180°+210°+240°+270°+330°

Complementary#CD6667

Analogous#66CD99, #669BCD

Triadic#CC66CD, #CDCC66

Split complementary#CD669B, #CD9966

Tetradic#9866CD, #CD6667, #9BCD66

Tints, shades & saturation

+40%+30%+20%+10%base -10%-20%-30%-40%

Lighter +40%#FFFFFF

Lighter +30%#D9F3F2

Lighter +20%#B3E6E6

Lighter +10%#8CDAD9

Darker −10%#40C0BF

Darker −20%#329B99

Darker −30%#267473

Darker −40%#194E4D

More saturated +25%#4DE6E5

Less saturated −25%#7FB4B3

Channel breakdown

R102

G205

B204

Red102 (40%)

Green205 (80.4%)

Blue204 (80%)

Hue179.42°

Saturation (HSL)50.74%

Lightness60.2%

Dominant channelGreen

Hex per channelR 66 · G CD · B CC

Keep nerding

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#66CDCC

Colour values

Brightness & contrast

Colour vision & accessibility

Named colours

Colour harmonies

Tints, shades & saturation

Channel breakdown

Keep nerding

Harmonies

Lighter and darker

Similar named colours

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