#66C8EC#66C8EC

#66C8EC is a light, moderate cyan. Relative luminance 0.502; OKLCH L 78.7% C 0.105 H 224.6°. Best body text is #000000 at 11.04:1 contrast (WCAG AA passes).

Color values

HEX	#66C8EC
RGB	rgb(102, 200, 236)
HSL	hsl(196, 78%, 66%)
HSV	hsv(196, 57%, 93%)
CMYK	cmyk(56.8%, 15.3%, 0%, 7.5%)
CIE-LAB	lab(76.18, -18.73, -26.55)
CIE-LCH	lch(76.18, 32.49, 234.80°)
OKLab	oklab(78.71% -0.0748 -0.0738)
OKLCH	oklch(78.71% 0.105 224.6)
XYZ	xyz(41.2682, 50.1856, 86.8526)
Luminance	0.5019 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66C8EC #EC8A66

analogous

#66ECCD #66C8EC #6685EC

triadic

#66C8EC #EC66C8 #C8EC66

tetradic

#66C8EC #CD66EC #EC8A66 #85EC66

square

#66C8EC #CD66EC #EC8A66 #85EC66

split-complementary

#66C8EC #EC6685 #ECCD66

monochromatic

#1893C0 #30B4E5 #66C8EC #9CDCF3 #D3EFFA

Accessibility & contrast

On white

1.90

#66C8EC on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.04

#66C8EC on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66C8EC

11.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66C8EC	#FFFFFF	#000000	##000000
##66C8EC	1.00	1.90	11.04	11.04
#FFFFFF	1.90	1.00	21.00	21.00
#000000	11.04	21.00	1.00	1.00
##000000	11.04	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B4C4EE

Deuteranopia (green-blind)

#A1B6EC

Tritanopia (blue-blind)

#00D3D3

Achromatopsia (no color)

#BCBCBC

Design tokens & code

CSS

--color: #66c8ec;
/* rgb */ color: rgb(102, 200, 236);
/* oklch */ color: oklch(78.7% 0.105 224.6);

Tailwind

colors: {
  custom: {
    50: '#9cd8f2',
    500: '#66c8ec',
    950: '#000000',
  },
}

SCSS

$custom: #66c8ec;
$custom-light: #9cd8f2;
$custom-dark: #000000;

JSON

{
  "hex": "#66c8ec",
  "rgb": {
    "r": 102,
    "g": 200,
    "b": 236
  },
  "hsl": {
    "h": 196.119,
    "s": 77.907,
    "l": 66.275
  },
  "oklch": {
    "l": 0.78708,
    "c": 0.10509,
    "h": 224.6
  },
  "luminance": 0.50189
}

Semantic roles & 50–950 ramp

primary

#66C8EC

secondary

#BE5C38

accent

#430BDA

background

#FCFEFF

surface

#F6FBFE

border

#D0D4D6

text

#0F1417

muted

#808385

Preview Lab

Preview with #66C8EC

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

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