#66B6ED#66B6ED

#66B6ED is a light, moderate cyan. Relative luminance 0.424; OKLCH L 74.7% C 0.112 H 240.5°. Best body text is #000000 at 9.48:1 contrast (WCAG AA passes).

Color values

HEX	#66B6ED
RGB	rgb(102, 182, 237)
HSL	hsl(204, 79%, 66%)
HSV	hsv(204, 57%, 93%)
CMYK	cmyk(57%, 23.2%, 0%, 7.1%)
CIE-LAB	lab(71.14, -8.92, -34.86)
CIE-LCH	lch(71.14, 35.98, 255.64°)
OKLab	oklab(74.71% -0.0551 -0.0976)
OKLCH	oklch(74.71% 0.112 240.5)
XYZ	xyz(37.4878, 42.3917, 86.3112)
Luminance	0.4239 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66B6ED #ED9D66

analogous

#66EDE0 #66B6ED #6673ED

triadic

#66B6ED #ED66B6 #B6ED66

tetradic

#66B6ED #E066ED #ED9D66 #73ED66

square

#66B6ED #E066ED #ED9D66 #73ED66

split-complementary

#66B6ED #ED6673 #EDE066

monochromatic

#177CC2 #2F9CE7 #66B6ED #9DD0F3 #D4EAFA

Accessibility & contrast

On white

2.22

#66B6ED on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.48

#66B6ED on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66B6ED

9.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66B6ED	#FFFFFF	#000000	##000000
##66B6ED	1.00	2.22	9.48	9.48
#FFFFFF	2.22	1.00	21.00	21.00
#000000	9.48	21.00	1.00	1.00
##000000	9.48	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9DB6F0

Deuteranopia (green-blind)

#8BA8EC

Tritanopia (blue-blind)

#00C4C9

Achromatopsia (no color)

#AEAEAE

Design tokens & code

CSS

--color: #66b6ed;
/* rgb */ color: rgb(102, 182, 237);
/* oklch */ color: oklch(74.7% 0.112 240.5);

Tailwind

colors: {
  custom: {
    50: '#9bcbf3',
    500: '#66b6ed',
    950: '#000000',
  },
}

SCSS

$custom: #66b6ed;
$custom-light: #9bcbf3;
$custom-dark: #000000;

JSON

{
  "hex": "#66b6ed",
  "rgb": {
    "r": 102,
    "g": 182,
    "b": 237
  },
  "hsl": {
    "h": 204.444,
    "s": 78.947,
    "l": 66.471
  },
  "oklch": {
    "l": 0.74711,
    "c": 0.11208,
    "h": 240.5
  },
  "luminance": 0.42395
}

Semantic roles & 50–950 ramp

primary

#66B6ED

secondary

#EDD3C2

accent

#5F0ADB

background

#FAFCFE

surface

#F4F8FD

border

#CED1D5

text

#0F1317

muted

#7F8285

Preview Lab

Preview with #66B6ED

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

Preview Lab → · Contrast checker → · Palette generator →