#66D3FA#66D3FA

#66D3FA is a light, moderate cyan. Relative luminance 0.563; OKLCH L 81.8% C 0.114 H 224.3°. Best body text is #000000 at 12.26:1 contrast (WCAG AA passes).

Color values

HEX	#66D3FA
RGB	rgb(102, 211, 250)
HSL	hsl(196, 94%, 69%)
HSV	hsv(196, 59%, 98%)
CMYK	cmyk(59.2%, 15.6%, 0%, 2%)
CIE-LAB	lab(79.79, -20.26, -28.51)
CIE-LCH	lch(79.79, 34.98, 234.60°)
OKLab	oklab(81.75% -0.0813 -0.0794)
OKLCH	oklch(81.75% 0.114 224.3)
XYZ	xyz(46.0223, 56.3109, 98.8677)
Luminance	0.5632 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66D3FA #FA8D66

analogous

#66FAD7 #66D3FA #6689FA

triadic

#66D3FA #FA66D3 #D3FA66

tetradic

#66D3FA #D766FA #FA8D66 #89FA66

square

#66D3FA #D766FA #FA8D66 #89FA66

split-complementary

#66D3FA #FA6689 #FAD766

monochromatic

#07A6DE #2BC2F8 #66D3FA #A1E4FC #DDF5FE

Accessibility & contrast

On white

1.71

#66D3FA on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.26

#66D3FA on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66D3FA

12.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66D3FA	#FFFFFF	#000000	##000000
##66D3FA	1.00	1.71	12.26	12.26
#FFFFFF	1.71	1.00	21.00	21.00
#000000	12.26	21.00	1.00	1.00
##000000	12.26	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BDCFFC

Deuteranopia (green-blind)

#A8BFFA

Tritanopia (blue-blind)

#00DFDF

Achromatopsia (no color)

#C6C6C6

Design tokens & code

CSS

--color: #66d3fa;
/* rgb */ color: rgb(102, 211, 250);
/* oklch */ color: oklch(81.8% 0.114 224.3);

Tailwind

colors: {
  custom: {
    50: '#9ee0fc',
    500: '#66d3fa',
    950: '#000000',
  },
}

SCSS

$custom: #66d3fa;
$custom-light: #9ee0fc;
$custom-dark: #000000;

JSON

{
  "hex": "#66d3fa",
  "rgb": {
    "r": 102,
    "g": 211,
    "b": 250
  },
  "hsl": {
    "h": 195.811,
    "s": 93.671,
    "l": 69.02
  },
  "oklch": {
    "l": 0.81753,
    "c": 0.11362,
    "h": 224.3
  },
  "luminance": 0.56315
}

Semantic roles & 50–950 ramp

primary

#66D3FA

secondary

#D45B30

accent

#3C00E6

background

#FCFEFF

surface

#F6FCFF

border

#D0D5D7

text

#101517

muted

#808485

Preview Lab

Preview with #66D3FA

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

Preview Lab → · Contrast checker → · Palette generator →