#66DAF7#66DAF7

#66DAF7 is a very light, moderate cyan. Relative luminance 0.597; OKLCH L 83.2% C 0.112 H 216.7°. Best body text is #000000 at 12.94:1 contrast (WCAG AA passes).

Color values

HEX	#66DAF7
RGB	rgb(102, 218, 247)
HSL	hsl(192, 90%, 68%)
HSV	hsv(192, 59%, 97%)
CMYK	cmyk(58.7%, 11.7%, 0%, 3.1%)
CIE-LAB	lab(81.66, -24.64, -24.06)
CIE-LCH	lch(81.66, 34.44, 224.31°)
OKLab	oklab(83.22% -0.0896 -0.0668)
OKLCH	oklch(83.22% 0.112 216.7)
XYZ	xyz(47.3327, 59.6783, 97.0023)
Luminance	0.5968 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66DAF7 #F78366

analogous

#66F7CB #66DAF7 #6691F7

triadic

#66DAF7 #F766DA #DAF766

tetradic

#66DAF7 #CB66F7 #F78366 #91F766

square

#66DAF7 #CB66F7 #F78366 #91F766

split-complementary

#66DAF7 #F76691 #F7CB66

monochromatic

#0BAFD7 #2CCCF4 #66DAF7 #A0E8FA #DAF6FD

Accessibility & contrast

On white

1.62

#66DAF7 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.94

#66DAF7 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66DAF7

12.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66DAF7	#FFFFFF	#000000	##000000
##66DAF7	1.00	1.62	12.94	12.94
#FFFFFF	1.62	1.00	21.00	21.00
#000000	12.94	21.00	1.00	1.00
##000000	12.94	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C6D4F9

Deuteranopia (green-blind)

#B1C4F7

Tritanopia (blue-blind)

#00E4E3

Achromatopsia (no color)

#CBCBCB

Design tokens & code

CSS

--color: #66daf7;
/* rgb */ color: rgb(102, 218, 247);
/* oklch */ color: oklch(83.2% 0.112 216.7);

Tailwind

colors: {
  custom: {
    50: '#9ee5fa',
    500: '#66daf7',
    950: '#000000',
  },
}

SCSS

$custom: #66daf7;
$custom-light: #9ee5fa;
$custom-dark: #000000;

JSON

{
  "hex": "#66daf7",
  "rgb": {
    "r": 102,
    "g": 218,
    "b": 247
  },
  "hsl": {
    "h": 192,
    "s": 90.062,
    "l": 68.431
  },
  "oklch": {
    "l": 0.83218,
    "c": 0.11178,
    "h": 216.7
  },
  "luminance": 0.59683
}

Semantic roles & 50–950 ramp

primary

#66DAF7

secondary

#D05131

accent

#2E00E6

background

#FCFEFF

surface

#F6FCFF

border

#D0D5D7

text

#101517

muted

#808485

Preview Lab

Preview with #66DAF7

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

Preview Lab → · Contrast checker → · Palette generator →