Colour
#66FFFB
- #66FFFB
- Cyan
- Light
- Nearest: Aqua
#66FFFB is a cyan with RGB values 102, 255, 251 and HSL 178°, 100%, 70%. It is a light colour, so black text on it reaches 17.3:1 contrast (AAA for normal text). The nearest named colour is Aqua.
Colour values
#66FFFB#66FFFB
HEX#66FFFB
RGBrgb(102, 255, 251)
RGB (0–1)0.4, 1, 0.9843
RGB percentages40%, 100%, 98.4%
HSLhsl(178.4, 100%, 70%)
HSV / HSBhsv(178.4, 60%, 100%)
CMYK60%, 0%, 1.6%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,750,203
CSS custom property--colour: #66FFFB;
Brightness & contrast
Relative luminance0.8131WCAG 2.x, 0 is black and 1 is white
Perceived brightness220.1 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 17.26:1
Contrast with white1.22:1WCAG normal text: Fail
Contrast with black17.26:1WCAG normal text: AAA
Greyscale equivalent#DEDEDE
Inverted#990004
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text1.22:1WCAG large text: Fail
Contrast with black, large text17.26:1WCAG large text: AAA
Named colours
Hue familycyan
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#FF666A
Analogous#66FFAF, #66B6FF
Triadic#FB66FF, #FFFB66
Split complementary#FF66B6, #FFAF66
Tetradic#AF66FF, #FF666A, #B6FF66
Tints, shades & saturation
Channel breakdown
R102
G255
B251
Red102 (40%)
Green255 (100%)
Blue251 (98.4%)
Hue178.43°
Saturation (HSL)100%
Lightness70%
Dominant channelGreen
Hex per channelR 66 · G FF · B FB
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