Recognised as Colour
#21F7E8
- #21F7E8
- Cyan
- Light
- Nearest: Aqua
#21F7E8 is a cyan with RGB values 33, 247, 232 and HSL 176°, 93%, 55%. It is a light colour, so black text on it reaches 15.5:1 contrast (AAA for normal text). The nearest named colour is Aqua.
Colour values
#21F7E8#21F7E8
HEX#21F7E8
RGBrgb(33, 247, 232)
RGB (0–1)0.1294, 0.9686, 0.9098
RGB percentages12.9%, 96.9%, 91%
HSLhsl(175.8, 93%, 54.9%)
HSV / HSBhsv(175.8, 86.6%, 96.9%)
CMYK86.6%, 0%, 6.1%, 3.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,226,152
CSS custom property--colour: #21F7E8;
Brightness & contrast
Relative luminance0.72671WCAG 2.x, 0 is black and 1 is white
Perceived brightness205.6 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 15.53:1
Contrast with white1.35:1WCAG normal text: Fail
Contrast with black15.53:1WCAG normal text: AAA
Greyscale equivalent#C8C8C8
Inverted#DE0817
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text1.35:1WCAG large text: Fail
Contrast with black, large text15.53:1WCAG large text: AAA
Named colours
Hue familycyan
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#F72130
Analogous#21F77D, #219BF7
Triadic#E821F7, #F7E821
Split complementary#F7219B, #F77D21
Tetradic#7D21F7, #F72130, #9BF721
Tints, shades & saturation
Channel breakdown
R33
G247
B232
Red33 (12.9%)
Green247 (96.9%)
Blue232 (91%)
Hue175.79°
Saturation (HSL)93.04%
Lightness54.9%
Dominant channelGreen
Hex per channelR 21 · G F7 · B E8
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