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Recognised as Colour

#66CFBA

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

#66CFBA is a cyan with RGB values 102, 207, 186 and HSL 168°, 52%, 61%. 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 aquamarine.

Colour values

#66CFBA#66CFBA
HEX#66CFBA
RGBrgb(102, 207, 186)
RGB (0–1)0.4, 0.8118, 0.7294
RGB percentages40%, 81.2%, 72.9%
HSLhsl(168, 52.2%, 60.6%)
HSV / HSBhsv(168, 50.7%, 81.2%)
CMYK50.7%, 0%, 10.1%, 18.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,737,850
CSS custom property--colour: #66CFBA;

Brightness & contrast

Relative luminance0.50996WCAG 2.x, 0 is black and 1 is white
Perceived brightness179.5 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 11.2:1
Contrast with white1.88:1WCAG normal text: Fail
Contrast with black11.2:1WCAG normal text: AAA
Greyscale equivalent#B7B7B7
Inverted#993045

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#C8C4B9no red cones; affects about 1% of men; ΔE 35.4 from the original
Deuteranopia#B7B8BCno green cones; the most common form, about 1% of men; ΔE 36.1 from the original
Tritanopia#31D2C9no blue cones; rare, and affects men and women equally; ΔE 10.2 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 text11.2:1WCAG large text: AAA

Named colours

Medium aquamarine · ΔE 7.8Medium turquoise · ΔE 9.7Turquoise · ΔE 11Light seagreen · ΔE 13.3Dark turquoise · ΔE 15.4Aquamarine · ΔE 20.2
Nearest named CSS colourMedium aquamarine (#66CDAA)ΔE 7.77, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#CF667B
Analogous#66CF86, #66B0CF
Triadic#BA66CF, #CFBA66
Split complementary#CF66B0, #CF8666
Tetradic#8666CF, #CF667B, #B0CF66

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#DAF4EF
Lighter +20%#B4E7DD
Lighter +10%#8DDBCC
Darker −10%#3FC3A8
Darker −20%#319E88
Darker −30%#257766
Darker −40%#195045
More saturated +25%#4DE8C9
Less saturated −25%#7FB6AB

Channel breakdown

R102
G207
B186
Red102 (40%)
Green207 (81.2%)
Blue186 (72.9%)
Hue168°
Saturation (HSL)52.24%
Lightness60.59%
Dominant channelGreen
Hex per channelR 66 · G CF · B BA

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