Colour
#66FCFD
- #66FCFD
- Cyan
- Light
- Nearest: Aqua
#66FCFD is a cyan with RGB values 102, 252, 253 and HSL 180°, 97%, 70%. It is a light colour, so black text on it reaches 16.9:1 contrast (AAA for normal text). The nearest named colour is Aqua.
Colour values
#66FCFD#66FCFD
HEX#66FCFD
RGBrgb(102, 252, 253)
RGB (0–1)0.4, 0.9882, 0.9922
RGB percentages40%, 98.8%, 99.2%
HSLhsl(180.4, 97.4%, 69.6%)
HSV / HSBhsv(180.4, 59.7%, 99.2%)
CMYK59.7%, 0.4%, 0%, 0.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,749,437
CSS custom property--colour: #66FCFD;
Brightness & contrast
Relative luminance0.79537WCAG 2.x, 0 is black and 1 is white
Perceived brightness218.4 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 16.91:1
Contrast with white1.24:1WCAG normal text: Fail
Contrast with black16.91:1WCAG normal text: AAA
Greyscale equivalent#DCDCDC
Inverted#990302
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text1.24:1WCAG large text: Fail
Contrast with black, large text16.91:1WCAG large text: AAA
Named colours
Hue familycyan
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#FD6766
Analogous#66FDB2, #66B1FD
Triadic#FD66FC, #FCFD66
Split complementary#FD66B1, #FDB266
Tetradic#B266FD, #FD6766, #B1FD66
Tints, shades & saturation
Channel breakdown
R102
G252
B253
Red102 (40%)
Green252 (98.8%)
Blue253 (99.2%)
Hue180.4°
Saturation (HSL)97.42%
Lightness69.61%
Dominant channelBlue
Hex per channelR 66 · G FC · B FD
Keep nerding
Every link below is a page Nerdulator can generate from what it already knows about this value.
Nerdulate something else
Nothing in mind? Surprise me · today’s page