#66D0EA#66D0EA

#66D0EA is a light, moderate cyan. Relative luminance 0.539; OKLCH L 80.4% C 0.104 H 216.1°. Best body text is #000000 at 11.78:1 contrast (WCAG AA passes).

Color values

HEX	#66D0EA
RGB	rgb(102, 208, 234)
HSL	hsl(192, 76%, 66%)
HSV	hsv(192, 56%, 92%)
CMYK	cmyk(56.4%, 11.1%, 0%, 8.2%)
CIE-LAB	lab(78.39, -23.36, -22.11)
CIE-LCH	lch(78.39, 32.17, 223.43°)
OKLab	oklab(80.45% -0.0841 -0.0613)
OKLCH	oklch(80.45% 0.104 216.1)
XYZ	xyz(42.8807, 53.8729, 85.9647)
Luminance	0.5388 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66D0EA #EA8066

analogous

#66EAC2 #66D0EA #668EEA

triadic

#66D0EA #EA66D0 #D0EA66

tetradic

#66D0EA #C266EA #EA8066 #8EEA66

square

#66D0EA #C266EA #EA8066 #8EEA66

split-complementary

#66D0EA #EA668E #EAC266

monochromatic

#1A9CBC #30BFE3 #66D0EA #9CE1F1 #D2F1F9

Accessibility & contrast

On white

1.78

#66D0EA on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.78

#66D0EA on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66D0EA

11.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66D0EA	#FFFFFF	#000000	##000000
##66D0EA	1.00	1.78	11.78	11.78
#FFFFFF	1.78	1.00	21.00	21.00
#000000	11.78	21.00	1.00	1.00
##000000	11.78	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BECAEB

Deuteranopia (green-blind)

#AABCEA

Tritanopia (blue-blind)

#00DAD8

Achromatopsia (no color)

#C2C2C2

Design tokens & code

CSS

--color: #66d0ea;
/* rgb */ color: rgb(102, 208, 234);
/* oklch */ color: oklch(80.4% 0.104 216.1);

Tailwind

colors: {
  custom: {
    50: '#9cdef0',
    500: '#66d0ea',
    950: '#000000',
  },
}

SCSS

$custom: #66d0ea;
$custom-light: #9cdef0;
$custom-dark: #000000;

JSON

{
  "hex": "#66d0ea",
  "rgb": {
    "r": 102,
    "g": 208,
    "b": 234
  },
  "hsl": {
    "h": 191.818,
    "s": 75.862,
    "l": 65.882
  },
  "oklch": {
    "l": 0.80448,
    "c": 0.10405,
    "h": 216.1
  },
  "luminance": 0.53877
}

Semantic roles & 50–950 ramp

primary

#66D0EA

secondary

#BB5339

accent

#350DD8

background

#FCFEFF

surface

#F6FCFE

border

#D0D5D6

text

#0F1516

muted

#808485

Preview Lab

Preview with #66D0EA

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

Preview Lab → · Contrast checker → · Palette generator →