#66BDCF#66BDCF

#66BDCF is a light, moderate cyan. Relative luminance 0.437; OKLCH L 75.1% C 0.088 H 212.7°. Best body text is #000000 at 9.74:1 contrast (WCAG AA passes).

Color values

HEX	#66BDCF
RGB	rgb(102, 189, 207)
HSL	hsl(190, 52%, 61%)
HSV	hsv(190, 51%, 81%)
CMYK	cmyk(50.7%, 8.7%, 0%, 18.8%)
CIE-LAB	lab(72.04, -21.33, -17.14)
CIE-LCH	lch(72.04, 27.36, 218.78°)
OKLab	oklab(75.07% -0.0737 -0.0473)
OKLCH	oklch(75.07% 0.088 212.7)
XYZ	xyz(34.9352, 43.7219, 65.6176)
Luminance	0.4373 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66BDCF #CF7866

analogous

#66CFAD #66BDCF #6688CF

triadic

#66BDCF #CF66BD #BDCF66

tetradic

#66BDCF #AD66CF #CF7866 #88CF66

square

#66BDCF #AD66CF #CF7866 #88CF66

split-complementary

#66BDCF #CF6688 #CFAD66

monochromatic

#2D7D8E #3BA6BD #66BDCF #95D1DE #C3E5EC

Accessibility & contrast

On white

2.15

#66BDCF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.74

#66BDCF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BDCF

9.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66BDCF	#FFFFFF	#000000	##000000
##66BDCF	1.00	2.15	9.74	9.74
#FFFFFF	2.15	1.00	21.00	21.00
#000000	9.74	21.00	1.00	1.00
##000000	9.74	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#AFB8D0

Deuteranopia (green-blind)

#9FABCF

Tritanopia (blue-blind)

#22C5C2

Achromatopsia (no color)

#B1B1B1

Design tokens & code

CSS

--color: #66bdcf;
/* rgb */ color: rgb(102, 189, 207);
/* oklch */ color: oklch(75.1% 0.088 212.7);

Tailwind

colors: {
  custom: {
    50: '#99d1dd',
    500: '#66bdcf',
    950: '#000000',
  },
}

SCSS

$custom: #66bdcf;
$custom-light: #99d1dd;
$custom-dark: #000000;

JSON

{
  "hex": "#66bdcf",
  "rgb": {
    "r": 102,
    "g": 189,
    "b": 207
  },
  "hsl": {
    "h": 190.286,
    "s": 52.239,
    "l": 60.588
  },
  "oklch": {
    "l": 0.75068,
    "c": 0.08762,
    "h": 212.7
  },
  "luminance": 0.43725
}

Semantic roles & 50–950 ramp

primary

#66BDCF

secondary

#DCBBB4

accent

#4026C0

background

#F9FCFD

surface

#F2F9FB

border

#CCD2D4

text

#0E1415

muted

#7E8283

Preview Lab

Preview with #66BDCF

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

Preview Lab → · Contrast checker → · Palette generator →