#66C8EA#66C8EA

#66C8EA is a light, moderate cyan. Relative luminance 0.501; OKLCH L 78.6% C 0.104 H 223.3°. Best body text is #000000 at 11.01:1 contrast (WCAG AA passes).

Color values

HEX	#66C8EA
RGB	rgb(102, 200, 234)
HSL	hsl(195, 76%, 66%)
HSV	hsv(195, 56%, 92%)
CMYK	cmyk(56.4%, 14.5%, 0%, 8.2%)
CIE-LAB	lab(76.11, -19.31, -25.58)
CIE-LCH	lch(76.11, 32.05, 232.95°)
OKLab	oklab(78.63% -0.0755 -0.0711)
OKLCH	oklch(78.63% 0.104 223.3)
XYZ	xyz(40.9793, 50.0700, 85.3309)
Luminance	0.5007 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66C8EA #EA8866

analogous

#66EACA #66C8EA #6686EA

triadic

#66C8EA #EA66C8 #C8EA66

tetradic

#66C8EA #CA66EA #EA8866 #86EA66

square

#66C8EA #CA66EA #EA8866 #86EA66

split-complementary

#66C8EA #EA6686 #EACA66

monochromatic

#1A92BC #30B5E3 #66C8EA #9CDBF1 #D2EFF9

Accessibility & contrast

On white

1.91

#66C8EA on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.01

#66C8EA on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66C8EA

11.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66C8EA	#FFFFFF	#000000	##000000
##66C8EA	1.00	1.91	11.01	11.01
#FFFFFF	1.91	1.00	21.00	21.00
#000000	11.01	21.00	1.00	1.00
##000000	11.01	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B5C4EC

Deuteranopia (green-blind)

#A1B5EA

Tritanopia (blue-blind)

#00D3D3

Achromatopsia (no color)

#BCBCBC

Design tokens & code

CSS

--color: #66c8ea;
/* rgb */ color: rgb(102, 200, 234);
/* oklch */ color: oklch(78.6% 0.104 223.3);

Tailwind

colors: {
  custom: {
    50: '#9cd8f0',
    500: '#66c8ea',
    950: '#000000',
  },
}

SCSS

$custom: #66c8ea;
$custom-light: #9cd8f0;
$custom-dark: #000000;

JSON

{
  "hex": "#66c8ea",
  "rgb": {
    "r": 102,
    "g": 200,
    "b": 234
  },
  "hsl": {
    "h": 195.455,
    "s": 75.862,
    "l": 65.882
  },
  "oklch": {
    "l": 0.78628,
    "c": 0.10372,
    "h": 223.3
  },
  "luminance": 0.50074
}

Semantic roles & 50–950 ramp

primary

#66C8EA

secondary

#BB5B39

accent

#420DD8

background

#FCFEFF

surface

#F5FBFE

border

#CFD4D6

text

#0F1416

muted

#808385

Preview Lab

Preview with #66C8EA

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

Preview Lab → · Contrast checker → · Palette generator →