#66BEE4#66BEE4

#66BEE4 is a light, moderate cyan. Relative luminance 0.453; OKLCH L 76.1% C 0.101 H 228.3°. Best body text is #000000 at 10.05:1 contrast (WCAG AA passes).

Color values

HEX	#66BEE4
RGB	rgb(102, 190, 228)
HSL	hsl(198, 70%, 65%)
HSV	hsv(198, 55%, 89%)
CMYK	cmyk(55.3%, 16.7%, 0%, 10.6%)
CIE-LAB	lab(73.06, -15.87, -27.02)
CIE-LCH	lch(73.06, 31.33, 239.57°)
OKLab	oklab(76.12% -0.0669 -0.0752)
OKLCH	oklch(76.12% 0.101 228.3)
XYZ	xyz(37.8912, 45.2497, 80.1210)
Luminance	0.4525 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66BEE4 #E48C66

analogous

#66E4CB #66BEE4 #667FE4

triadic

#66BEE4 #E466BE #BEE466

tetradic

#66BEE4 #CB66E4 #E48C66 #7FE466

square

#66BEE4 #CB66E4 #E48C66 #7FE466

split-complementary

#66BEE4 #E4667F #E4CB66

monochromatic

#1F85B0 #32A8DB #66BEE4 #9AD4ED #CEEAF6

Accessibility & contrast

On white

2.09

#66BEE4 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.05

#66BEE4 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BEE4

10.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66BEE4	#FFFFFF	#000000	##000000
##66BEE4	1.00	2.09	10.05	10.05
#FFFFFF	2.09	1.00	21.00	21.00
#000000	10.05	21.00	1.00	1.00
##000000	10.05	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#AABBE6

Deuteranopia (green-blind)

#98ADE4

Tritanopia (blue-blind)

#00C9CA

Achromatopsia (no color)

#B3B3B3

Design tokens & code

CSS

--color: #66bee4;
/* rgb */ color: rgb(102, 190, 228);
/* oklch */ color: oklch(76.1% 0.101 228.3);

Tailwind

colors: {
  custom: {
    50: '#9bd1ec',
    500: '#66bee4',
    950: '#000000',
  },
}

SCSS

$custom: #66bee4;
$custom-light: #9bd1ec;
$custom-dark: #000000;

JSON

{
  "hex": "#66bee4",
  "rgb": {
    "r": 102,
    "g": 190,
    "b": 228
  },
  "hsl": {
    "h": 198.095,
    "s": 70,
    "l": 64.706
  },
  "oklch": {
    "l": 0.76119,
    "c": 0.10062,
    "h": 228.3
  },
  "luminance": 0.45253
}

Semantic roles & 50–950 ramp

primary

#66BEE4

secondary

#E9CABD

accent

#4D14D2

background

#FAFCFE

surface

#F3F9FD

border

#CDD2D5

text

#0F1416

muted

#7F8284

Preview Lab

Preview with #66BEE4

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

Preview Lab → · Contrast checker → · Palette generator →