#66BCEB#66BCEB

#66BCEB is a light, moderate cyan. Relative luminance 0.448; OKLCH L 76.0% C 0.107 H 234.5°. Best body text is #000000 at 9.96:1 contrast (WCAG AA passes).

Color values

HEX	#66BCEB
RGB	rgb(102, 188, 235)
HSL	hsl(201, 77%, 66%)
HSV	hsv(201, 57%, 92%)
CMYK	cmyk(56.6%, 20%, 0%, 7.8%)
CIE-LAB	lab(72.75, -12.75, -31.28)
CIE-LCH	lch(72.75, 33.78, 247.83°)
OKLab	oklab(75.96% -0.0622 -0.0873)
OKLCH	oklch(75.96% 0.107 234.5)
XYZ	xyz(38.4525, 44.7859, 85.1993)
Luminance	0.4479 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66BCEB #EB9566

analogous

#66EBD7 #66BCEB #6679EB

triadic

#66BCEB #EB66BC #BCEB66

tetradic

#66BCEB #D766EB #EB9566 #79EB66

square

#66BCEB #D766EB #EB9566 #79EB66

split-complementary

#66BCEB #EB6679 #EBD766

monochromatic

#1983BE #30A4E4 #66BCEB #9CD4F2 #D2EBF9

Accessibility & contrast

On white

2.11

#66BCEB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.96

#66BCEB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BCEB

9.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66BCEB	#FFFFFF	#000000	##000000
##66BCEB	1.00	2.11	9.96	9.96
#FFFFFF	2.11	1.00	21.00	21.00
#000000	9.96	21.00	1.00	1.00
##000000	9.96	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A6BAED

Deuteranopia (green-blind)

#93ACEA

Tritanopia (blue-blind)

#00C8CC

Achromatopsia (no color)

#B2B2B2

Design tokens & code

CSS

--color: #66bceb;
/* rgb */ color: rgb(102, 188, 235);
/* oklch */ color: oklch(76.0% 0.107 234.5);

Tailwind

colors: {
  custom: {
    50: '#9bd0f1',
    500: '#66bceb',
    950: '#000000',
  },
}

SCSS

$custom: #66bceb;
$custom-light: #9bd0f1;
$custom-dark: #000000;

JSON

{
  "hex": "#66bceb",
  "rgb": {
    "r": 102,
    "g": 188,
    "b": 235
  },
  "hsl": {
    "h": 201.203,
    "s": 76.879,
    "l": 66.078
  },
  "oklch": {
    "l": 0.75962,
    "c": 0.10724,
    "h": 234.5
  },
  "luminance": 0.44789
}

Semantic roles & 50–950 ramp

primary

#66BCEB

secondary

#ECD0C1

accent

#550CD9

background

#FAFCFE

surface

#F4F9FD

border

#CED2D5

text

#0F1416

muted

#7F8284

Preview Lab

Preview with #66BCEB

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

Preview Lab → · Contrast checker → · Palette generator →