#66CFEF#66CFEF

#66CFEF is a light, moderate cyan. Relative luminance 0.537; OKLCH L 80.4% C 0.107 H 220.5°. Best body text is #000000 at 11.74:1 contrast (WCAG AA passes).

Color values

HEX	#66CFEF
RGB	rgb(102, 207, 239)
HSL	hsl(194, 81%, 67%)
HSV	hsv(194, 57%, 94%)
CMYK	cmyk(57.3%, 13.4%, 0%, 6.3%)
CIE-LAB	lab(78.27, -21.43, -24.96)
CIE-LCH	lch(78.27, 32.90, 229.35°)
OKLab	oklab(80.41% -0.0811 -0.0693)
OKLCH	oklch(80.41% 0.107 220.5)
XYZ	xyz(43.3662, 53.6783, 89.7202)
Luminance	0.5368 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66CFEF #EF8666

analogous

#66EFCB #66CFEF #668BEF

triadic

#66CFEF #EF66CF #CFEF66

tetradic

#66CFEF #CB66EF #EF8666 #8BEF66

square

#66CFEF #CB66EF #EF8666 #8BEF66

split-complementary

#66CFEF #EF668B #EFCB66

monochromatic

#159DC6 #2FBEE9 #66CFEF #9DE0F5 #D5F2FB

Accessibility & contrast

On white

1.79

#66CFEF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.74

#66CFEF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66CFEF

11.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66CFEF	#FFFFFF	#000000	##000000
##66CFEF	1.00	1.79	11.74	11.74
#FFFFFF	1.79	1.00	21.00	21.00
#000000	11.74	21.00	1.00	1.00
##000000	11.74	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BCCAF1

Deuteranopia (green-blind)

#A8BBEF

Tritanopia (blue-blind)

#00DAD9

Achromatopsia (no color)

#C2C2C2

Design tokens & code

CSS

--color: #66cfef;
/* rgb */ color: rgb(102, 207, 239);
/* oklch */ color: oklch(80.4% 0.107 220.5);

Tailwind

colors: {
  custom: {
    50: '#9dddf4',
    500: '#66cfef',
    950: '#000000',
  },
}

SCSS

$custom: #66cfef;
$custom-light: #9dddf4;
$custom-dark: #000000;

JSON

{
  "hex": "#66cfef",
  "rgb": {
    "r": 102,
    "g": 207,
    "b": 239
  },
  "hsl": {
    "h": 194.015,
    "s": 81.065,
    "l": 66.863
  },
  "oklch": {
    "l": 0.80413,
    "c": 0.10672,
    "h": 220.5
  },
  "luminance": 0.53682
}

Semantic roles & 50–950 ramp

primary

#66CFEF

secondary

#C35736

accent

#3A08DD

background

#FCFEFF

surface

#F6FCFE

border

#D0D5D6

text

#0F1517

muted

#808485

Preview Lab

Preview with #66CFEF

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

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