#66C8F7#66C8F7

#66C8F7 is a light, moderate cyan. Relative luminance 0.508; OKLCH L 79.2% C 0.114 H 231.4°. Best body text is #000000 at 11.17:1 contrast (WCAG AA passes).

Color values

HEX	#66C8F7
RGB	rgb(102, 200, 247)
HSL	hsl(199, 90%, 68%)
HSV	hsv(199, 59%, 97%)
CMYK	cmyk(58.7%, 19%, 0%, 3.1%)
CIE-LAB	lab(76.58, -15.49, -31.84)
CIE-LCH	lch(76.58, 35.40, 244.06°)
OKLab	oklab(79.16% -0.0709 -0.0889)
OKLCH	oklch(79.16% 0.114 231.4)
XYZ	xyz(42.9158, 50.8446, 95.5300)
Luminance	0.5085 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66C8F7 #F79566

analogous

#66F7DD #66C8F7 #667FF7

triadic

#66C8F7 #F766C8 #C8F766

tetradic

#66C8F7 #DD66F7 #F79566 #7FF766

square

#66C8F7 #DD66F7 #F79566 #7FF766

split-complementary

#66C8F7 #F7667F #F7DD66

monochromatic

#0B95D7 #2CB3F4 #66C8F7 #A0DDFA #DAF2FD

Accessibility & contrast

On white

1.88

#66C8F7 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.17

#66C8F7 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66C8F7

11.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66C8F7	#FFFFFF	#000000	##000000
##66C8F7	1.00	1.88	11.17	11.17
#FFFFFF	1.88	1.00	21.00	21.00
#000000	11.17	21.00	1.00	1.00
##000000	11.17	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B1C6F9

Deuteranopia (green-blind)

#9CB6F6

Tritanopia (blue-blind)

#00D5D7

Achromatopsia (no color)

#BDBDBD

Design tokens & code

CSS

--color: #66c8f7;
/* rgb */ color: rgb(102, 200, 247);
/* oklch */ color: oklch(79.2% 0.114 231.4);

Tailwind

colors: {
  custom: {
    50: '#9dd8fa',
    500: '#66c8f7',
    950: '#000000',
  },
}

SCSS

$custom: #66c8f7;
$custom-light: #9dd8fa;
$custom-dark: #000000;

JSON

{
  "hex": "#66c8f7",
  "rgb": {
    "r": 102,
    "g": 200,
    "b": 247
  },
  "hsl": {
    "h": 199.448,
    "s": 90.062,
    "l": 68.431
  },
  "oklch": {
    "l": 0.79161,
    "c": 0.11368,
    "h": 231.4
  },
  "luminance": 0.50849
}

Semantic roles & 50–950 ramp

primary

#66C8F7

secondary

#D06531

accent

#4A00E6

background

#FCFEFF

surface

#F6FBFF

border

#D0D4D7

text

#0F1417

muted

#808385

Preview Lab

Preview with #66C8F7

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

Preview Lab → · Contrast checker → · Palette generator →