#66D5FC#66D5FC

#66D5FC is a very light, moderate cyan. Relative luminance 0.574; OKLCH L 82.3% C 0.115 H 224.0°. Best body text is #000000 at 12.49:1 contrast (WCAG AA passes).

Color values

HEX	#66D5FC
RGB	rgb(102, 213, 252)
HSL	hsl(196, 96%, 69%)
HSV	hsv(196, 60%, 99%)
CMYK	cmyk(59.5%, 15.5%, 0%, 1.2%)
CIE-LAB	lab(80.42, -20.69, -28.61)
CIE-LCH	lch(80.42, 35.31, 234.12°)
OKLab	oklab(82.28% -0.0826 -0.0796)
OKLCH	oklch(82.28% 0.115 224)
XYZ	xyz(46.8375, 57.4369, 100.6947)
Luminance	0.5744 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66D5FC #FC8D66

analogous

#66FCD8 #66D5FC #668AFC

triadic

#66D5FC #FC66D5 #D5FC66

tetradic

#66D5FC #D866FC #FC8D66 #8AFC66

square

#66D5FC #D866FC #FC8D66 #8AFC66

split-complementary

#66D5FC #FC668A #FCD866

monochromatic

#04A9E3 #2AC5FB #66D5FC #A2E5FD #DEF6FE

Accessibility & contrast

On white

1.68

#66D5FC on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.49

#66D5FC on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66D5FC

12.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66D5FC	#FFFFFF	#000000	##000000
##66D5FC	1.00	1.68	12.49	12.49
#FFFFFF	1.68	1.00	21.00	21.00
#000000	12.49	21.00	1.00	1.00
##000000	12.49	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BFD1FE

Deuteranopia (green-blind)

#AAC1FC

Tritanopia (blue-blind)

#00E1E1

Achromatopsia (no color)

#C8C8C8

Design tokens & code

CSS

--color: #66d5fc;
/* rgb */ color: rgb(102, 213, 252);
/* oklch */ color: oklch(82.3% 0.115 224.0);

Tailwind

colors: {
  custom: {
    50: '#9ee2fd',
    500: '#66d5fc',
    950: '#000000',
  },
}

SCSS

$custom: #66d5fc;
$custom-light: #9ee2fd;
$custom-dark: #000000;

JSON

{
  "hex": "#66d5fc",
  "rgb": {
    "r": 102,
    "g": 213,
    "b": 252
  },
  "hsl": {
    "h": 195.6,
    "s": 96.154,
    "l": 69.412
  },
  "oklch": {
    "l": 0.82284,
    "c": 0.11475,
    "h": 224
  },
  "luminance": 0.57442
}

Semantic roles & 50–950 ramp

primary

#66D5FC

secondary

#D65B30

accent

#3C00E6

background

#FCFEFF

surface

#F6FCFF

border

#D0D5D7

text

#101517

muted

#808485

Preview Lab

Preview with #66D5FC

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

Preview Lab → · Contrast checker → · Palette generator →