#66C8ED#66C8ED

#66C8ED is a light, moderate cyan. Relative luminance 0.502; OKLCH L 78.7% C 0.106 H 225.3°. Best body text is #000000 at 11.05:1 contrast (WCAG AA passes).

Color values

HEX	#66C8ED
RGB	rgb(102, 200, 237)
HSL	hsl(196, 79%, 66%)
HSV	hsv(196, 57%, 93%)
CMYK	cmyk(57%, 15.6%, 0%, 7.1%)
CIE-LAB	lab(76.22, -18.44, -27.03)
CIE-LCH	lch(76.22, 32.72, 235.70°)
OKLab	oklab(78.75% -0.0744 -0.0752)
OKLCH	oklch(78.75% 0.106 225.3)
XYZ	xyz(41.4139, 50.2438, 87.6199)
Luminance	0.5025 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66C8ED #ED8B66

analogous

#66EDCE #66C8ED #6685ED

triadic

#66C8ED #ED66C8 #C8ED66

tetradic

#66C8ED #CE66ED #ED8B66 #85ED66

square

#66C8ED #CE66ED #ED8B66 #85ED66

split-complementary

#66C8ED #ED6685 #EDCE66

monochromatic

#1793C2 #2FB4E7 #66C8ED #9DDCF3 #D4EFFA

Accessibility & contrast

On white

1.90

#66C8ED on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.05

#66C8ED on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66C8ED

11.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66C8ED	#FFFFFF	#000000	##000000
##66C8ED	1.00	1.90	11.05	11.05
#FFFFFF	1.90	1.00	21.00	21.00
#000000	11.05	21.00	1.00	1.00
##000000	11.05	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B4C4EF

Deuteranopia (green-blind)

#A0B6ED

Tritanopia (blue-blind)

#00D3D4

Achromatopsia (no color)

#BCBCBC

Design tokens & code

CSS

--color: #66c8ed;
/* rgb */ color: rgb(102, 200, 237);
/* oklch */ color: oklch(78.7% 0.106 225.3);

Tailwind

colors: {
  custom: {
    50: '#9cd8f3',
    500: '#66c8ed',
    950: '#000000',
  },
}

SCSS

$custom: #66c8ed;
$custom-light: #9cd8f3;
$custom-dark: #000000;

JSON

{
  "hex": "#66c8ed",
  "rgb": {
    "r": 102,
    "g": 200,
    "b": 237
  },
  "hsl": {
    "h": 196.444,
    "s": 78.947,
    "l": 66.471
  },
  "oklch": {
    "l": 0.78748,
    "c": 0.1058,
    "h": 225.3
  },
  "luminance": 0.50248
}

Semantic roles & 50–950 ramp

primary

#66C8ED

secondary

#C05D37

accent

#440ADB

background

#FCFEFF

surface

#F6FBFE

border

#D0D4D6

text

#0F1417

muted

#808385

Preview Lab

Preview with #66C8ED

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

Preview Lab → · Contrast checker → · Palette generator →