#66B4FA#66B4FA

#66B4FA is a light, vivid cyan. Relative luminance 0.424; OKLCH L 74.9% C 0.128 H 247.5°. Best body text is #000000 at 9.47:1 contrast (WCAG AA passes).

Color values

HEX	#66B4FA
RGB	rgb(102, 180, 250)
HSL	hsl(208, 94%, 69%)
HSV	hsv(208, 59%, 98%)
CMYK	cmyk(59.2%, 28%, 0%, 2%)
CIE-LAB	lab(71.12, -3.82, -41.93)
CIE-LCH	lch(71.12, 42.10, 264.79°)
OKLab	oklab(74.88% -0.0489 -0.118)
OKLCH	oklch(74.88% 0.128 247.5)
XYZ	xyz(39.0498, 42.3658, 96.5435)
Luminance	0.4237 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66B4FA #FAAC66

analogous

#66FAF6 #66B4FA #666AFA

triadic

#66B4FA #FA66B4 #B4FA66

tetradic

#66B4FA #F666FA #FAAC66 #6AFA66

square

#66B4FA #F666FA #FAAC66 #6AFA66

split-complementary

#66B4FA #FA666A #FAF666

monochromatic

#0779DE #2B97F8 #66B4FA #A1D1FC #DDEEFE

Accessibility & contrast

On white

2.22

#66B4FA on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.47

#66B4FA on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66B4FA

9.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66B4FA	#FFFFFF	#000000	##000000
##66B4FA	1.00	2.22	9.47	9.47
#FFFFFF	2.22	1.00	21.00	21.00
#000000	9.47	21.00	1.00	1.00
##000000	9.47	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#96B6FD

Deuteranopia (green-blind)

#82A8F9

Tritanopia (blue-blind)

#00C5CC

Achromatopsia (no color)

#AEAEAE

Design tokens & code

CSS

--color: #66b4fa;
/* rgb */ color: rgb(102, 180, 250);
/* oklch */ color: oklch(74.9% 0.128 247.5);

Tailwind

colors: {
  custom: {
    50: '#9dcafc',
    500: '#66b4fa',
    950: '#000000',
  },
}

SCSS

$custom: #66b4fa;
$custom-light: #9dcafc;
$custom-dark: #000000;

JSON

{
  "hex": "#66b4fa",
  "rgb": {
    "r": 102,
    "g": 180,
    "b": 250
  },
  "hsl": {
    "h": 208.378,
    "s": 93.671,
    "l": 69.02
  },
  "oklch": {
    "l": 0.74875,
    "c": 0.12776,
    "h": 247.5
  },
  "luminance": 0.42369
}

Semantic roles & 50–950 ramp

primary

#66B4FA

secondary

#F4DDC8

accent

#6D00E6

background

#FAFCFF

surface

#F4F8FF

border

#CED1D7

text

#0F1317

muted

#7F8285

Preview Lab

Preview with #66B4FA

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

Preview Lab → · Contrast checker → · Palette generator →