#66CDEC#66CDEC

#66CDEC is a light, moderate cyan. Relative luminance 0.525; OKLCH L 79.8% C 0.105 H 220.2°. Best body text is #000000 at 11.51:1 contrast (WCAG AA passes).

Color values

HEX	#66CDEC
RGB	rgb(102, 205, 236)
HSL	hsl(194, 78%, 66%)
HSV	hsv(194, 57%, 93%)
CMYK	cmyk(56.8%, 13.1%, 0%, 7.5%)
CIE-LAB	lab(77.60, -21.28, -24.38)
CIE-LCH	lch(77.60, 32.36, 228.88°)
OKLab	oklab(79.84% -0.0801 -0.0677)
OKLCH	oklch(79.84% 0.105 220.2)
XYZ	xyz(42.4452, 52.5395, 87.2449)
Luminance	0.5254 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66CDEC #EC8566

analogous

#66ECC8 #66CDEC #668AEC

triadic

#66CDEC #EC66CD #CDEC66

tetradic

#66CDEC #C866EC #EC8566 #8AEC66

square

#66CDEC #C866EC #EC8566 #8AEC66

split-complementary

#66CDEC #EC668A #ECC866

monochromatic

#1899C0 #30BBE5 #66CDEC #9CDFF3 #D3F1FA

Accessibility & contrast

On white

1.82

#66CDEC on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.51

#66CDEC on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66CDEC

11.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66CDEC	#FFFFFF	#000000	##000000
##66CDEC	1.00	1.82	11.51	11.51
#FFFFFF	1.82	1.00	21.00	21.00
#000000	11.51	21.00	1.00	1.00
##000000	11.51	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BAC8EE

Deuteranopia (green-blind)

#A6B9EC

Tritanopia (blue-blind)

#00D7D7

Achromatopsia (no color)

#C0C0C0

Design tokens & code

CSS

--color: #66cdec;
/* rgb */ color: rgb(102, 205, 236);
/* oklch */ color: oklch(79.8% 0.105 220.2);

Tailwind

colors: {
  custom: {
    50: '#9cdcf2',
    500: '#66cdec',
    950: '#000000',
  },
}

SCSS

$custom: #66cdec;
$custom-light: #9cdcf2;
$custom-dark: #000000;

JSON

{
  "hex": "#66cdec",
  "rgb": {
    "r": 102,
    "g": 205,
    "b": 236
  },
  "hsl": {
    "h": 193.881,
    "s": 77.907,
    "l": 66.275
  },
  "oklch": {
    "l": 0.79842,
    "c": 0.10489,
    "h": 220.2
  },
  "luminance": 0.52544
}

Semantic roles & 50–950 ramp

primary

#66CDEC

secondary

#BE5738

accent

#3B0BDA

background

#FCFEFF

surface

#F6FCFE

border

#D0D5D6

text

#0F1516

muted

#808485

Preview Lab

Preview with #66CDEC

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

Preview Lab → · Contrast checker → · Palette generator →