#66CFEB#66CFEB

#66CFEB is a light, moderate cyan. Relative luminance 0.534; OKLCH L 80.3% C 0.104 H 217.7°. Best body text is #000000 at 11.69:1 contrast (WCAG AA passes).

Color values

HEX	#66CFEB
RGB	rgb(102, 207, 235)
HSL	hsl(193, 77%, 66%)
HSV	hsv(193, 57%, 92%)
CMYK	cmyk(56.6%, 11.9%, 0%, 7.8%)
CIE-LAB	lab(78.14, -22.58, -23.03)
CIE-LCH	lch(78.14, 32.25, 225.57°)
OKLab	oklab(80.26% -0.0826 -0.0639)
OKLCH	oklch(80.26% 0.104 217.7)
XYZ	xyz(42.7818, 53.4445, 86.6424)
Luminance	0.5345 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66CFEB #EB8266

analogous

#66EBC5 #66CFEB #668CEB

triadic

#66CFEB #EB66CF #CFEB66

tetradic

#66CFEB #C566EB #EB8266 #8CEB66

square

#66CFEB #C566EB #EB8266 #8CEB66

split-complementary

#66CFEB #EB668C #EBC566

monochromatic

#199BBE #30BEE4 #66CFEB #9CE0F2 #D2F1F9

Accessibility & contrast

On white

1.80

#66CFEB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.69

#66CFEB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66CFEB

11.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66CFEB	#FFFFFF	#000000	##000000
##66CFEB	1.00	1.80	11.69	11.69
#FFFFFF	1.80	1.00	21.00	21.00
#000000	11.69	21.00	1.00	1.00
##000000	11.69	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BDCAED

Deuteranopia (green-blind)

#A9BBEB

Tritanopia (blue-blind)

#00D9D8

Achromatopsia (no color)

#C1C1C1

Design tokens & code

CSS

--color: #66cfeb;
/* rgb */ color: rgb(102, 207, 235);
/* oklch */ color: oklch(80.3% 0.104 217.7);

Tailwind

colors: {
  custom: {
    50: '#9cddf1',
    500: '#66cfeb',
    950: '#000000',
  },
}

SCSS

$custom: #66cfeb;
$custom-light: #9cddf1;
$custom-dark: #000000;

JSON

{
  "hex": "#66cfeb",
  "rgb": {
    "r": 102,
    "g": 207,
    "b": 235
  },
  "hsl": {
    "h": 192.632,
    "s": 76.879,
    "l": 66.078
  },
  "oklch": {
    "l": 0.80258,
    "c": 0.10444,
    "h": 217.7
  },
  "luminance": 0.53449
}

Semantic roles & 50–950 ramp

primary

#66CFEB

secondary

#BD5439

accent

#370CD9

background

#FCFEFF

surface

#F6FCFE

border

#D0D5D6

text

#0F1516

muted

#808485

Preview Lab

Preview with #66CFEB

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

Preview Lab → · Contrast checker → · Palette generator →