Colour
#66A699
- #66A699
- Cyan
- Dark
- Nearest: Cadetblue
#66A699 is a cyan with RGB values 102, 166, 153 and HSL 168°, 26%, 53%. It is a dark colour, so black text on it reaches 7.5:1 contrast (AAA for normal text). The nearest named colour is Cadetblue.
Colour values
#66A699#66A699
HEX#66A699
RGBrgb(102, 166, 153)
RGB (0–1)0.4, 0.651, 0.6
RGB percentages40%, 65.1%, 60%
HSLhsl(167.8, 26.4%, 52.5%)
HSV / HSBhsv(167.8, 38.6%, 65.1%)
CMYK38.6%, 0%, 7.8%, 34.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,727,321
CSS custom property--colour: #66A699;
Brightness & contrast
Relative luminance0.32397WCAG 2.x, 0 is black and 1 is white
Perceived brightness148.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 7.48:1
Contrast with white2.81:1WCAG normal text: Fail
Contrast with black7.48:1WCAG normal text: AAA
Greyscale equivalent#979797
Inverted#995966
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text2.81:1WCAG large text: Fail
Contrast with black, large text7.48:1WCAG large text: AAA
Named colours
Hue familycyan
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#A66673
Analogous#66A679, #6693A6
Triadic#9966A6, #A69966
Split complementary#A66693, #A67966
Tetradic#7966A6, #A66673, #93A666
Tints, shades & saturation
Channel breakdown
R102
G166
B153
Red102 (40%)
Green166 (65.1%)
Blue153 (60%)
Hue167.81°
Saturation (HSL)26.45%
Lightness52.55%
Dominant channelGreen
Hex per channelR 66 · G A6 · B 99
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