Recognised as Colour
#18EFE5
- #18EFE5
- Cyan
- Light
- Nearest: Turquoise
#18EFE5 is a cyan with RGB values 24, 239, 229 and HSL 177°, 87%, 52%. It is a light colour, so black text on it reaches 14.5:1 contrast (AAA for normal text). The nearest named colour is Turquoise.
Colour values
#18EFE5#18EFE5
HEX#18EFE5
RGBrgb(24, 239, 229)
RGB (0–1)0.0941, 0.9373, 0.898
RGB percentages9.4%, 93.7%, 89.8%
HSLhsl(177.2, 87%, 51.6%)
HSV / HSBhsv(177.2, 90%, 93.7%)
CMYK90%, 0%, 4.2%, 6.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,634,277
CSS custom property--colour: #18EFE5;
Brightness & contrast
Relative luminance0.67584WCAG 2.x, 0 is black and 1 is white
Perceived brightness199.2 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 14.52:1
Contrast with white1.45:1WCAG normal text: Fail
Contrast with black14.52:1WCAG normal text: AAA
Greyscale equivalent#C1C1C1
Inverted#E7101A
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text1.45:1WCAG large text: Fail
Contrast with black, large text14.52:1WCAG large text: AAA
Named colours
Hue familycyan
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#EF1822
Analogous#18EF7A, #188EEF
Triadic#E518EF, #EFE518
Split complementary#EF188E, #EF7A18
Tetradic#7918EF, #EF1822, #8DEF18
Tints, shades & saturation
Channel breakdown
R24
G239
B229
Red24 (9.4%)
Green239 (93.7%)
Blue229 (89.8%)
Hue177.21°
Saturation (HSL)87.04%
Lightness51.57%
Dominant channelGreen
Hex per channelR 18 · G EF · B E5
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