Recognised as Colour
#669D99
- #669D99
- Cyan
- Dark
- Nearest: Cadetblue
#669D99 is a cyan with RGB values 102, 157, 153 and HSL 176°, 22%, 51%. It is a dark colour, so black text on it reaches 6.8:1 contrast (AA for normal text). The nearest named colour is Cadetblue.
Colour values
#669D99#669D99
HEX#669D99
RGBrgb(102, 157, 153)
RGB (0–1)0.4, 0.6157, 0.6
RGB percentages40%, 61.6%, 60%
HSLhsl(175.6, 21.9%, 50.8%)
HSV / HSBhsv(175.6, 35%, 61.6%)
CMYK35%, 0%, 2.5%, 38.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,725,017
CSS custom property--colour: #669D99;
Brightness & contrast
Relative luminance0.29239WCAG 2.x, 0 is black and 1 is white
Perceived brightness142.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 6.85:1
Contrast with white3.07:1WCAG normal text: Fail
Contrast with black6.85:1WCAG normal text: AA
Greyscale equivalent#919191
Inverted#996266
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.07:1WCAG large text: AA
Contrast with black, large text6.85:1WCAG large text: AAA
Named colours
Hue familycyan
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#9D666A
Analogous#669D7E, #66859D
Triadic#99669D, #9D9966
Split complementary#9D6686, #9D7D66
Tetradic#7D669D, #9D666A, #869D66
Tints, shades & saturation
Channel breakdown
R102
G157
B153
Red102 (40%)
Green157 (61.6%)
Blue153 (60%)
Hue175.64°
Saturation (HSL)21.91%
Lightness50.78%
Dominant channelGreen
Hex per channelR 66 · G 9D · B 99
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