#66D8FC#66D8FC

#66D8FC is a very light, moderate cyan. Relative luminance 0.590; OKLCH L 83.0% C 0.115 H 221.6°. Best body text is #000000 at 12.79:1 contrast (WCAG AA passes).

Color values

HEX	#66D8FC
RGB	rgb(102, 216, 252)
HSL	hsl(194, 96%, 69%)
HSV	hsv(194, 60%, 99%)
CMYK	cmyk(59.5%, 14.3%, 0%, 1.2%)
CIE-LAB	lab(81.27, -22.20, -27.31)
CIE-LCH	lch(81.27, 35.20, 230.89°)
OKLab	oklab(82.96% -0.0857 -0.076)
OKLCH	oklch(82.96% 0.115 221.6)
XYZ	xyz(47.5991, 58.9600, 100.9485)
Luminance	0.5897 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66D8FC #FC8A66

analogous

#66FCD5 #66D8FC #668DFC

triadic

#66D8FC #FC66D8 #D8FC66

tetradic

#66D8FC #D566FC #FC8A66 #8DFC66

square

#66D8FC #D566FC #FC8A66 #8DFC66

split-complementary

#66D8FC #FC668D #FCD566

monochromatic

#04AEE3 #2AC9FB #66D8FC #A2E7FD #DEF7FE

Accessibility & contrast

On white

1.64

#66D8FC on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.79

#66D8FC on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66D8FC

12.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66D8FC	#FFFFFF	#000000	##000000
##66D8FC	1.00	1.64	12.79	12.79
#FFFFFF	1.64	1.00	21.00	21.00
#000000	12.79	21.00	1.00	1.00
##000000	12.79	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C3D3FE

Deuteranopia (green-blind)

#ADC3FC

Tritanopia (blue-blind)

#00E4E3

Achromatopsia (no color)

#CACACA

Design tokens & code

CSS

--color: #66d8fc;
/* rgb */ color: rgb(102, 216, 252);
/* oklch */ color: oklch(83.0% 0.115 221.6);

Tailwind

colors: {
  custom: {
    50: '#9ee4fd',
    500: '#66d8fc',
    950: '#000000',
  },
}

SCSS

$custom: #66d8fc;
$custom-light: #9ee4fd;
$custom-dark: #000000;

JSON

{
  "hex": "#66d8fc",
  "rgb": {
    "r": 102,
    "g": 216,
    "b": 252
  },
  "hsl": {
    "h": 194.4,
    "s": 96.154,
    "l": 69.412
  },
  "oklch": {
    "l": 0.82959,
    "c": 0.11454,
    "h": 221.6
  },
  "luminance": 0.58965
}

Semantic roles & 50–950 ramp

primary

#66D8FC

secondary

#D65830

accent

#3700E6

background

#FCFEFF

surface

#F6FCFF

border

#D0D5D7

text

#101517

muted

#808485

Preview Lab

Preview with #66D8FC

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →