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Colour

#66CFA6

  • #66CFA6
  • Cyan
  • Light
  • Nearest: Medium aquamarine

#66CFA6 is a cyan with RGB values 102, 207, 166 and HSL 157°, 52%, 61%. It is a light colour, so black text on it reaches 11:1 contrast (AAA for normal text). The nearest named colour is Medium aquamarine.

Colour values

#66CFA6#66CFA6
HEX#66CFA6
RGBrgb(102, 207, 166)
RGB (0–1)0.4, 0.8118, 0.651
RGB percentages40%, 81.2%, 65.1%
HSLhsl(156.6, 52.2%, 60.6%)
HSV / HSBhsv(156.6, 50.7%, 81.2%)
CMYK50.7%, 0%, 19.8%, 18.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,737,830
CSS custom property--colour: #66CFA6;

Brightness & contrast

Relative luminance0.50204WCAG 2.x, 0 is black and 1 is white
Perceived brightness177.2 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 11.04:1
Contrast with white1.9:1WCAG normal text: Fail
Contrast with black11.04:1WCAG normal text: AAA
Greyscale equivalent#B6B6B6
Inverted#993059

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#CBC3A4no red cones; affects about 1% of men; ΔE 38.3 from the original
Deuteranopia#BBB7A9no green cones; the most common form, about 1% of men; ΔE 39.3 from the original
Tritanopia#40CFC3no blue cones; rare, and affects men and women equally; ΔE 16.2 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 text11.04:1WCAG large text: AAA

Named colours

Medium aquamarine · ΔE 3.4Turquoise · ΔE 16.5Aquamarine · ΔE 16.8Dark seagreen · ΔE 18.2Medium seagreen · ΔE 18.9Medium turquoise · ΔE 19.7
Nearest named CSS colourMedium aquamarine (#66CDAA)ΔE 3.41, a close match
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#CF668F
Analogous#66CF71, #66C4CF
Triadic#A666CF, #CFA666
Split complementary#CF66C4, #CF7266
Tetradic#7166CF, #CF668F, #C4CF66

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#DAF4EA
Lighter +20%#B4E7D3
Lighter +10%#8DDBBD
Darker −10%#3FC38F
Darker −20%#319E73
Darker −30%#257757
Darker −40%#19503B
More saturated +25%#4DE8AC
Less saturated −25%#7FB6A0

Channel breakdown

R102
G207
B166
Red102 (40%)
Green207 (81.2%)
Blue166 (65.1%)
Hue156.57°
Saturation (HSL)52.24%
Lightness60.59%
Dominant channelGreen
Hex per channelR 66 · G CF · B A6

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Every value on this page was computed from “66cfa6” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.