Colour
#00FFFF
- #00FFFF
- Cyan
- Light
- Named: Aqua
#00FFFF is the CSS colour cyan with RGB values 0, 255, 255 and HSL 180°, 100%, 50%. It is a light colour, so black text on it reaches 16.7:1 contrast (AAA for normal text). The nearest named colour is Aqua.
Colour values
#00FFFF#00FFFF
HEX#00FFFF
HEX (short)#0FF
RGBrgb(0, 255, 255)
RGB (0–1)0, 1, 1
RGB percentages0%, 100%, 100%
HSLhsl(180, 100%, 50%)
HSV / HSBhsv(180, 100%, 100%)
CMYK100%, 0%, 0%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer65,535
CSS custom property--colour: #00FFFF;
Brightness & contrast
Relative luminance0.7874WCAG 2.x, 0 is black and 1 is white
Perceived brightness213.5 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 16.75:1
Contrast with white1.25:1WCAG normal text: Fail
Contrast with black16.75:1WCAG normal text: AAA
Greyscale equivalent#C9C9C9
Inverted#FF0000
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text1.25:1WCAG large text: Fail
Contrast with black, large text16.75:1WCAG large text: AAA
Named colours
Colour harmonies
Complementary#FF0000
Analogous#00FF80, #0080FF
Triadic#FF00FF, #FFFF00
Split complementary#FF0080, #FF8000
Tetradic#8000FF, #FF0000, #80FF00
Tints, shades & saturation
Channel breakdown
R0
G255
B255
Red0 (0%)
Green255 (100%)
Blue255 (100%)
Hue180°
Saturation (HSL)100%
Lightness50%
Dominant channelGreen and Blue
Hex per channelR 00 · G FF · B FF
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