#66C7EA#66C7EA

#66C7EA is a light, moderate cyan. Relative luminance 0.496; OKLCH L 78.4% C 0.104 H 224.2°. Best body text is #000000 at 10.92:1 contrast (WCAG AA passes).

Color values

HEX	#66C7EA
RGB	rgb(102, 199, 234)
HSL	hsl(196, 76%, 66%)
HSV	hsv(196, 56%, 92%)
CMYK	cmyk(56.4%, 15%, 0%, 8.2%)
CIE-LAB	lab(75.83, -18.79, -26.01)
CIE-LCH	lch(75.83, 32.09, 234.15°)
OKLab	oklab(78.4% -0.0744 -0.0723)
OKLCH	oklch(78.4% 0.104 224.2)
XYZ	xyz(40.7484, 49.6083, 85.2539)
Luminance	0.4961 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66C7EA #EA8966

analogous

#66EACB #66C7EA #6685EA

triadic

#66C7EA #EA66C7 #C7EA66

tetradic

#66C7EA #CB66EA #EA8966 #85EA66

square

#66C7EA #CB66EA #EA8966 #85EA66

split-complementary

#66C7EA #EA6685 #EACB66

monochromatic

#1A91BC #30B3E3 #66C7EA #9CDBF1 #D2EEF9

Accessibility & contrast

On white

1.92

#66C7EA on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.92

#66C7EA on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66C7EA

10.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66C7EA	#FFFFFF	#000000	##000000
##66C7EA	1.00	1.92	10.92	10.92
#FFFFFF	1.92	1.00	21.00	21.00
#000000	10.92	21.00	1.00	1.00
##000000	10.92	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B3C3EC

Deuteranopia (green-blind)

#A0B5EA

Tritanopia (blue-blind)

#00D2D2

Achromatopsia (no color)

#BBBBBB

Design tokens & code

CSS

--color: #66c7ea;
/* rgb */ color: rgb(102, 199, 234);
/* oklch */ color: oklch(78.4% 0.104 224.2);

Tailwind

colors: {
  custom: {
    50: '#9cd8f0',
    500: '#66c7ea',
    950: '#000000',
  },
}

SCSS

$custom: #66c7ea;
$custom-light: #9cd8f0;
$custom-dark: #000000;

JSON

{
  "hex": "#66c7ea",
  "rgb": {
    "r": 102,
    "g": 199,
    "b": 234
  },
  "hsl": {
    "h": 195.909,
    "s": 75.862,
    "l": 65.882
  },
  "oklch": {
    "l": 0.78401,
    "c": 0.10379,
    "h": 224.2
  },
  "luminance": 0.49612
}

Semantic roles & 50–950 ramp

primary

#66C7EA

secondary

#ECCCC0

accent

#430DD8

background

#FAFDFE

surface

#F4FAFD

border

#CED3D5

text

#0F1416

muted

#7F8384

Preview Lab

Preview with #66C7EA

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

Preview Lab → · Contrast checker → · Palette generator →