#66D8FA#66D8FA

#66D8FA is a very light, moderate cyan. Relative luminance 0.588; OKLCH L 82.9% C 0.113 H 220.3°. Best body text is #000000 at 12.77:1 contrast (WCAG AA passes).

Color values

HEX	#66D8FA
RGB	rgb(102, 216, 250)
HSL	hsl(194, 94%, 69%)
HSV	hsv(194, 59%, 98%)
CMYK	cmyk(59.2%, 13.6%, 0%, 2%)
CIE-LAB	lab(81.20, -22.78, -26.36)
CIE-LCH	lch(81.20, 34.84, 229.16°)
OKLab	oklab(82.88% -0.0864 -0.0733)
OKLCH	oklch(82.88% 0.113 220.3)
XYZ	xyz(47.2838, 58.8339, 99.2882)
Luminance	0.5884 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66D8FA #FA8866

analogous

#66FAD2 #66D8FA #668EFA

triadic

#66D8FA #FA66D8 #D8FA66

tetradic

#66D8FA #D266FA #FA8866 #8EFA66

square

#66D8FA #D266FA #FA8866 #8EFA66

split-complementary

#66D8FA #FA668E #FAD266

monochromatic

#07ADDE #2BC9F8 #66D8FA #A1E7FC #DDF6FE

Accessibility & contrast

On white

1.64

#66D8FA on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.77

#66D8FA on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66D8FA

12.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66D8FA	#FFFFFF	#000000	##000000
##66D8FA	1.00	1.64	12.77	12.77
#FFFFFF	1.64	1.00	21.00	21.00
#000000	12.77	21.00	1.00	1.00
##000000	12.77	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C3D3FC

Deuteranopia (green-blind)

#AEC3FA

Tritanopia (blue-blind)

#00E3E3

Achromatopsia (no color)

#CACACA

Design tokens & code

CSS

--color: #66d8fa;
/* rgb */ color: rgb(102, 216, 250);
/* oklch */ color: oklch(82.9% 0.113 220.3);

Tailwind

colors: {
  custom: {
    50: '#9ee4fc',
    500: '#66d8fa',
    950: '#000000',
  },
}

SCSS

$custom: #66d8fa;
$custom-light: #9ee4fc;
$custom-dark: #000000;

JSON

{
  "hex": "#66d8fa",
  "rgb": {
    "r": 102,
    "g": 216,
    "b": 250
  },
  "hsl": {
    "h": 193.784,
    "s": 93.671,
    "l": 69.02
  },
  "oklch": {
    "l": 0.82881,
    "c": 0.11332,
    "h": 220.3
  },
  "luminance": 0.58839
}

Semantic roles & 50–950 ramp

primary

#66D8FA

secondary

#D45630

accent

#3500E6

background

#FCFEFF

surface

#F6FCFF

border

#D0D5D7

text

#101517

muted

#808485

Preview Lab

Preview with #66D8FA

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

Preview Lab → · Contrast checker → · Palette generator →