#66CDEB#66CDEB

#66CDEB is a light, moderate cyan. Relative luminance 0.525; OKLCH L 79.8% C 0.104 H 219.5°. Best body text is #000000 at 11.50:1 contrast (WCAG AA passes).

Color values

HEX	#66CDEB
RGB	rgb(102, 205, 235)
HSL	hsl(194, 77%, 66%)
HSV	hsv(194, 57%, 92%)
CMYK	cmyk(56.6%, 12.8%, 0%, 7.8%)
CIE-LAB	lab(77.57, -21.57, -23.89)
CIE-LCH	lch(77.57, 32.19, 227.93°)
OKLab	oklab(79.8% -0.0805 -0.0663)
OKLCH	oklch(79.8% 0.104 219.5)
XYZ	xyz(42.3003, 52.4816, 86.4819)
Luminance	0.5249 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66CDEB #EB8466

analogous

#66EBC6 #66CDEB #668AEB

triadic

#66CDEB #EB66CD #CDEB66

tetradic

#66CDEB #C666EB #EB8466 #8AEB66

square

#66CDEB #C666EB #EB8466 #8AEB66

split-complementary

#66CDEB #EB668A #EBC666

monochromatic

#1999BE #30BBE4 #66CDEB #9CDFF2 #D2F0F9

Accessibility & contrast

On white

1.83

#66CDEB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.50

#66CDEB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66CDEB

11.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66CDEB	#FFFFFF	#000000	##000000
##66CDEB	1.00	1.83	11.50	11.50
#FFFFFF	1.83	1.00	21.00	21.00
#000000	11.50	21.00	1.00	1.00
##000000	11.50	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BAC8ED

Deuteranopia (green-blind)

#A7B9EB

Tritanopia (blue-blind)

#00D7D6

Achromatopsia (no color)

#C0C0C0

Design tokens & code

CSS

--color: #66cdeb;
/* rgb */ color: rgb(102, 205, 235);
/* oklch */ color: oklch(79.8% 0.104 219.5);

Tailwind

colors: {
  custom: {
    50: '#9cdcf1',
    500: '#66cdeb',
    950: '#000000',
  },
}

SCSS

$custom: #66cdeb;
$custom-light: #9cdcf1;
$custom-dark: #000000;

JSON

{
  "hex": "#66cdeb",
  "rgb": {
    "r": 102,
    "g": 205,
    "b": 235
  },
  "hsl": {
    "h": 193.534,
    "s": 76.879,
    "l": 66.078
  },
  "oklch": {
    "l": 0.79803,
    "c": 0.10431,
    "h": 219.5
  },
  "luminance": 0.52486
}

Semantic roles & 50–950 ramp

primary

#66CDEB

secondary

#BD5639

accent

#3B0CD9

background

#FCFEFF

surface

#F6FCFE

border

#D0D5D6

text

#0F1516

muted

#808485

Preview Lab

Preview with #66CDEB

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

Preview Lab → · Contrast checker → · Palette generator →