#66C8F4#66C8F4

#66C8F4 is a light, moderate cyan. Relative luminance 0.507; OKLCH L 79.0% C 0.111 H 229.7°. Best body text is #000000 at 11.13:1 contrast (WCAG AA passes).

Color values

HEX	#66C8F4
RGB	rgb(102, 200, 244)
HSL	hsl(199, 87%, 68%)
HSV	hsv(199, 58%, 96%)
CMYK	cmyk(58.2%, 18%, 0%, 4.3%)
CIE-LAB	lab(76.47, -16.38, -30.40)
CIE-LCH	lch(76.47, 34.53, 241.69°)
OKLab	oklab(79.04% -0.0719 -0.0848)
OKLCH	oklch(79.04% 0.111 229.7)
XYZ	xyz(42.4566, 50.6609, 93.1115)
Luminance	0.5067 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66C8F4 #F49266

analogous

#66F4D9 #66C8F4 #6681F4

triadic

#66C8F4 #F466C8 #C8F466

tetradic

#66C8F4 #D966F4 #F49266 #81F466

square

#66C8F4 #D966F4 #F49266 #81F466

split-complementary

#66C8F4 #F46681 #F4D966

monochromatic

#0F95D1 #2DB3F0 #66C8F4 #9FDDF8 #D8F1FC

Accessibility & contrast

On white

1.89

#66C8F4 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.13

#66C8F4 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66C8F4

11.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66C8F4	#FFFFFF	#000000	##000000
##66C8F4	1.00	1.89	11.13	11.13
#FFFFFF	1.89	1.00	21.00	21.00
#000000	11.13	21.00	1.00	1.00
##000000	11.13	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B2C5F6

Deuteranopia (green-blind)

#9EB6F3

Tritanopia (blue-blind)

#00D4D6

Achromatopsia (no color)

#BDBDBD

Design tokens & code

CSS

--color: #66c8f4;
/* rgb */ color: rgb(102, 200, 244);
/* oklch */ color: oklch(79.0% 0.111 229.7);

Tailwind

colors: {
  custom: {
    50: '#9dd8f8',
    500: '#66c8f4',
    950: '#000000',
  },
}

SCSS

$custom: #66c8f4;
$custom-light: #9dd8f8;
$custom-dark: #000000;

JSON

{
  "hex": "#66c8f4",
  "rgb": {
    "r": 102,
    "g": 200,
    "b": 244
  },
  "hsl": {
    "h": 198.592,
    "s": 86.585,
    "l": 67.843
  },
  "oklch": {
    "l": 0.79035,
    "c": 0.11118,
    "h": 229.7
  },
  "luminance": 0.50665
}

Semantic roles & 50–950 ramp

primary

#66C8F4

secondary

#CC6232

accent

#4802E3

background

#FCFEFF

surface

#F6FBFE

border

#D0D4D6

text

#0F1417

muted

#808385

Preview Lab

Preview with #66C8F4

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

Preview Lab → · Contrast checker → · Palette generator →