#66B4CB#66B4CB

#66B4CB is a light, moderate cyan. Relative luminance 0.398; OKLCH L 72.8% C 0.084 H 219.1°. Best body text is #000000 at 8.96:1 contrast (WCAG AA passes).

Color values

HEX	#66B4CB
RGB	rgb(102, 180, 203)
HSL	hsl(194, 49%, 60%)
HSV	hsv(194, 50%, 80%)
CMYK	cmyk(49.8%, 11.3%, 0%, 20.4%)
CIE-LAB	lab(69.31, -17.80, -19.08)
CIE-LCH	lch(69.31, 26.10, 226.99°)
OKLab	oklab(72.84% -0.065 -0.0528)
OKLCH	oklch(72.84% 0.084 219.1)
XYZ	xyz(32.5762, 39.7764, 62.4493)
Luminance	0.3978 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66B4CB #CB7D66

analogous

#66CBAF #66B4CB #6682CB

triadic

#66B4CB #CB66B4 #B4CB66

tetradic

#66B4CB #AF66CB #CB7D66 #82CB66

square

#66B4CB #AF66CB #CB7D66 #82CB66

split-complementary

#66B4CB #CB6682 #CBAF66

monochromatic

#2E7488 #3E9BB6 #66B4CB #94CADB #C1E1EA

Accessibility & contrast

On white

2.34

#66B4CB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.96

#66B4CB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66B4CB

8.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66B4CB	#FFFFFF	#000000	##000000
##66B4CB	1.00	2.34	8.96	8.96
#FFFFFF	2.34	1.00	21.00	21.00
#000000	8.96	21.00	1.00	1.00
##000000	8.96	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A5B0CC

Deuteranopia (green-blind)

#96A4CB

Tritanopia (blue-blind)

#2CBCBB

Achromatopsia (no color)

#A9A9A9

Design tokens & code

CSS

--color: #66b4cb;
/* rgb */ color: rgb(102, 180, 203);
/* oklch */ color: oklch(72.8% 0.084 219.1);

Tailwind

colors: {
  custom: {
    50: '#98cada',
    500: '#66b4cb',
    950: '#000000',
  },
}

SCSS

$custom: #66b4cb;
$custom-light: #98cada;
$custom-dark: #000000;

JSON

{
  "hex": "#66b4cb",
  "rgb": {
    "r": 102,
    "g": 180,
    "b": 203
  },
  "hsl": {
    "h": 193.663,
    "s": 49.268,
    "l": 59.804
  },
  "oklch": {
    "l": 0.72839,
    "c": 0.08373,
    "h": 219.1
  },
  "luminance": 0.39779
}

Semantic roles & 50–950 ramp

primary

#66B4CB

secondary

#DABCB3

accent

#6E4FD9

background

#F9FCFD

surface

#F2F8FA

border

#CCD1D3

text

#0E1315

muted

#7E8283

Preview Lab

Preview with #66B4CB

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

Preview Lab → · Contrast checker → · Palette generator →