#66D9FA#66D9FA

#66D9FA is a very light, moderate cyan. Relative luminance 0.594; OKLCH L 83.1% C 0.113 H 219.5°. Best body text is #000000 at 12.87:1 contrast (WCAG AA passes).

Color values

HEX	#66D9FA
RGB	rgb(102, 217, 250)
HSL	hsl(193, 94%, 69%)
HSV	hsv(193, 59%, 98%)
CMYK	cmyk(59.2%, 13.2%, 0%, 2%)
CIE-LAB	lab(81.48, -23.28, -25.93)
CIE-LCH	lch(81.48, 34.85, 228.07°)
OKLab	oklab(83.11% -0.0875 -0.0721)
OKLCH	oklch(83.11% 0.113 219.5)
XYZ	xyz(47.5408, 59.3479, 99.3738)
Luminance	0.5935 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66D9FA #FA8766

analogous

#66FAD1 #66D9FA #668FFA

triadic

#66D9FA #FA66D9 #D9FA66

tetradic

#66D9FA #D166FA #FA8766 #8FFA66

square

#66D9FA #D166FA #FA8766 #8FFA66

split-complementary

#66D9FA #FA668F #FAD166

monochromatic

#07AEDE #2BCAF8 #66D9FA #A1E8FC #DDF6FE

Accessibility & contrast

On white

1.63

#66D9FA on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.87

#66D9FA on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66D9FA

12.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66D9FA	#FFFFFF	#000000	##000000
##66D9FA	1.00	1.63	12.87	12.87
#FFFFFF	1.63	1.00	21.00	21.00
#000000	12.87	21.00	1.00	1.00
##000000	12.87	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C4D4FC

Deuteranopia (green-blind)

#AFC4FA

Tritanopia (blue-blind)

#00E4E3

Achromatopsia (no color)

#CACACA

Design tokens & code

CSS

--color: #66d9fa;
/* rgb */ color: rgb(102, 217, 250);
/* oklch */ color: oklch(83.1% 0.113 219.5);

Tailwind

colors: {
  custom: {
    50: '#9ee5fc',
    500: '#66d9fa',
    950: '#000000',
  },
}

SCSS

$custom: #66d9fa;
$custom-light: #9ee5fc;
$custom-dark: #000000;

JSON

{
  "hex": "#66d9fa",
  "rgb": {
    "r": 102,
    "g": 217,
    "b": 250
  },
  "hsl": {
    "h": 193.378,
    "s": 93.671,
    "l": 69.02
  },
  "oklch": {
    "l": 0.83107,
    "c": 0.11334,
    "h": 219.5
  },
  "luminance": 0.59353
}

Semantic roles & 50–950 ramp

primary

#66D9FA

secondary

#D45530

accent

#3300E6

background

#FCFEFF

surface

#F6FCFF

border

#D0D5D7

text

#101517

muted

#808485

Preview Lab

Preview with #66D9FA

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

Preview Lab → · Contrast checker → · Palette generator →