Recognised as Colour
#40FCFF
- #40FCFF
- Cyan
- Light
- Nearest: Aqua
#40FCFF is a cyan with RGB values 64, 252, 255 and HSL 181°, 100%, 63%. It is a light colour, so black text on it reaches 16.6:1 contrast (AAA for normal text). The nearest named colour is Aqua.
Colour values
#40FCFF#40FCFF
HEX#40FCFF
RGBrgb(64, 252, 255)
RGB (0–1)0.251, 0.9882, 1
RGB percentages25.1%, 98.8%, 100%
HSLhsl(180.9, 100%, 62.5%)
HSV / HSBhsv(180.9, 74.9%, 100%)
CMYK74.9%, 1.2%, 0%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,259,071
CSS custom property--colour: #40FCFF;
Brightness & contrast
Relative luminance0.77931WCAG 2.x, 0 is black and 1 is white
Perceived brightness214.3 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 16.59:1
Contrast with white1.27:1WCAG normal text: Fail
Contrast with black16.59:1WCAG normal text: AAA
Greyscale equivalent#D4D4D4
Inverted#BF0300
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text1.27:1WCAG large text: Fail
Contrast with black, large text16.59:1WCAG large text: AAA
Named colours
Hue familycyan
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#FF4340
Analogous#40FFA3, #409CFF
Triadic#FF40FC, #FCFF40
Split complementary#FF409C, #FFA340
Tetradic#A340FF, #FF4340, #9CFF40
Tints, shades & saturation
Channel breakdown
R64
G252
B255
Red64 (25.1%)
Green252 (98.8%)
Blue255 (100%)
Hue180.94°
Saturation (HSL)100%
Lightness62.55%
Dominant channelBlue
Hex per channelR 40 · G FC · B FF
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