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Colour

#66CCCC

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

#66CCCC is a cyan with RGB values 102, 204, 204 and HSL 180°, 50%, 60%. It is a light colour, so black text on it reaches 11.1:1 contrast (AAA for normal text). The nearest named colour is Medium turquoise.

Colour values

#66CCCC#66CCCC
HEX#66CCCC
HEX (short)#6CC
RGBrgb(102, 204, 204)
RGB (0–1)0.4, 0.8, 0.8
RGB percentages40%, 80%, 80%
HSLhsl(180, 50%, 60%)
HSV / HSBhsv(180, 50%, 80%)
CMYK50%, 0%, 0%, 20%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,737,100
CSS custom property--colour: #66CCCC;

Brightness & contrast

Relative luminance0.5037WCAG 2.x, 0 is black and 1 is white
Perceived brightness179.7 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 11.07:1
Contrast with white1.9:1WCAG normal text: Fail
Contrast with black11.07:1WCAG normal text: AAA
Greyscale equivalent#B6B6B6
Inverted#993333

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#C1C4CCno red cones; affects about 1% of men; ΔE 30.6 from the original
Deuteranopia#AFB7CDno green cones; the most common form, about 1% of men; ΔE 31.5 from the original
Tritanopia#1DD1CCno 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 text1.9:1WCAG large text: Fail
Contrast with black, large text11.07:1WCAG large text: AAA

Named colours

Medium turquoise · ΔE 7.8Dark turquoise · ΔE 11.4Light seagreen · ΔE 13.5Turquoise · ΔE 16.2Pale turquoise · ΔE 17.2Cadetblue · ΔE 18.2
Nearest named CSS colourMedium turquoise (#48D1CC)ΔE 7.84, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#CC6666
Analogous#66CC99, #6699CC
Triadic#CC66CC, #CCCC66
Split complementary#CC6699, #CC9966
Tetradic#9966CC, #CC6666, #99CC66

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#D9F2F2
Lighter +20%#B3E6E6
Lighter +10%#8CD9D9
Darker −10%#40BFBF
Darker −20%#339999
Darker −30%#267373
Darker −40%#1A4D4D
More saturated +25%#4DE6E6
Less saturated −25%#80B3B3

Channel breakdown

R102
G204
B204
Red102 (40%)
Green204 (80%)
Blue204 (80%)
Hue180°
Saturation (HSL)50%
Lightness60%
Dominant channelGreen and Blue
Hex per channelR 66 · G CC · B CC

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