#66D0FA#66D0FA

#66D0FA is a light, moderate cyan. Relative luminance 0.548; OKLCH L 81.1% C 0.114 H 226.7°. Best body text is #000000 at 11.97:1 contrast (WCAG AA passes).

Color values

HEX	#66D0FA
RGB	rgb(102, 208, 250)
HSL	hsl(197, 94%, 69%)
HSV	hsv(197, 59%, 98%)
CMYK	cmyk(59.2%, 16.8%, 0%, 2%)
CIE-LAB	lab(78.95, -18.73, -29.81)
CIE-LCH	lch(78.95, 35.21, 237.85°)
OKLab	oklab(81.08% -0.0782 -0.0831)
OKLCH	oklch(81.08% 0.114 226.7)
XYZ	xyz(45.2840, 54.8342, 98.6215)
Luminance	0.5484 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66D0FA #FA9066

analogous

#66FADA #66D0FA #6686FA

triadic

#66D0FA #FA66D0 #D0FA66

tetradic

#66D0FA #DA66FA #FA9066 #86FA66

square

#66D0FA #DA66FA #FA9066 #86FA66

split-complementary

#66D0FA #FA6686 #FADA66

monochromatic

#07A1DE #2BBEF8 #66D0FA #A1E2FC #DDF4FE

Accessibility & contrast

On white

1.75

#66D0FA on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.97

#66D0FA on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66D0FA

11.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66D0FA	#FFFFFF	#000000	##000000
##66D0FA	1.00	1.75	11.97	11.97
#FFFFFF	1.75	1.00	21.00	21.00
#000000	11.97	21.00	1.00	1.00
##000000	11.97	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BACCFC

Deuteranopia (green-blind)

#A4BDFA

Tritanopia (blue-blind)

#00DCDE

Achromatopsia (no color)

#C3C3C3

Design tokens & code

CSS

--color: #66d0fa;
/* rgb */ color: rgb(102, 208, 250);
/* oklch */ color: oklch(81.1% 0.114 226.7);

Tailwind

colors: {
  custom: {
    50: '#9edefc',
    500: '#66d0fa',
    950: '#000000',
  },
}

SCSS

$custom: #66d0fa;
$custom-light: #9edefc;
$custom-dark: #000000;

JSON

{
  "hex": "#66d0fa",
  "rgb": {
    "r": 102,
    "g": 208,
    "b": 250
  },
  "hsl": {
    "h": 197.027,
    "s": 93.671,
    "l": 69.02
  },
  "oklch": {
    "l": 0.81079,
    "c": 0.11407,
    "h": 226.7
  },
  "luminance": 0.54839
}

Semantic roles & 50–950 ramp

primary

#66D0FA

secondary

#D45F30

accent

#4100E6

background

#FCFEFF

surface

#F6FCFF

border

#D0D5D7

text

#0F1517

muted

#808485

Preview Lab

Preview with #66D0FA

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

Preview Lab → · Contrast checker → · Palette generator →