#66C9CC#66C9CC

#66C9CC is a light, moderate teal. Relative luminance 0.490; OKLCH L 77.8% C 0.093 H 198.0°. Best body text is #000000 at 10.79:1 contrast (WCAG AA passes).

Color values

HEX	#66C9CC
RGB	rgb(102, 201, 204)
HSL	hsl(182, 50%, 60%)
HSV	hsv(182, 50%, 80%)
CMYK	cmyk(50%, 1.5%, 0%, 20%)
CIE-LAB	lab(75.42, -28.13, -10.43)
CIE-LCH	lch(75.42, 30.00, 200.35°)
OKLab	oklab(77.75% -0.0884 -0.0288)
OKLCH	oklch(77.75% 0.093 198)
XYZ	xyz(37.2608, 48.9544, 64.6006)
Luminance	0.4896 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66C9CC #CC6966

analogous

#66CC9C #66C9CC #6696CC

triadic

#66C9CC #CC66C9 #C9CC66

tetradic

#66C9CC #9C66CC #CC6966 #96CC66

square

#66C9CC #9C66CC #CC6966 #96CC66

split-complementary

#66C9CC #CC6696 #CC9C66

monochromatic

#2E878A #3DB4B8 #66C9CC #94D9DB #C2E9EB

Accessibility & contrast

On white

1.95

#66C9CC on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.79

#66C9CC on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66C9CC

10.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66C9CC	#FFFFFF	#000000	##000000
##66C9CC	1.00	1.95	10.79	10.79
#FFFFFF	1.95	1.00	21.00	21.00
#000000	10.79	21.00	1.00	1.00
##000000	10.79	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BDC1CC

Deuteranopia (green-blind)

#ACB4CD

Tritanopia (blue-blind)

#1FCFCA

Achromatopsia (no color)

#BABABA

Design tokens & code

CSS

--color: #66c9cc;
/* rgb */ color: rgb(102, 201, 204);
/* oklch */ color: oklch(77.8% 0.093 198.0);

Tailwind

colors: {
  custom: {
    50: '#9ad9db',
    500: '#66c9cc',
    950: '#000000',
  },
}

SCSS

$custom: #66c9cc;
$custom-light: #9ad9db;
$custom-dark: #000000;

JSON

{
  "hex": "#66c9cc",
  "rgb": {
    "r": 102,
    "g": 201,
    "b": 204
  },
  "hsl": {
    "h": 181.765,
    "s": 50,
    "l": 60
  },
  "oklch": {
    "l": 0.77751,
    "c": 0.093,
    "h": 198
  },
  "luminance": 0.48958
}

Semantic roles & 50–950 ramp

primary

#66C9CC

secondary

#DBB4B3

accent

#524EDA

background

#F9FDFD

surface

#F2FAFB

border

#CCD3D4

text

#0F1415

muted

#7E8383

Preview Lab

Preview with #66C9CC

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

Preview Lab → · Contrast checker → · Palette generator →