#66ACF7#66ACF7

#66ACF7 is a light, vivid cyan. Relative luminance 0.390; OKLCH L 73.0% C 0.131 H 251.5°. Best body text is #000000 at 8.81:1 contrast (WCAG AA passes).

Color values

HEX	#66ACF7
RGB	rgb(102, 172, 247)
HSL	hsl(211, 90%, 68%)
HSV	hsv(211, 59%, 97%)
CMYK	cmyk(58.7%, 30.4%, 0%, 3.1%)
CIE-LAB	lab(68.78, -0.31, -43.97)
CIE-LCH	lch(68.78, 43.97, 269.60°)
OKLab	oklab(72.99% -0.0414 -0.124)
OKLCH	oklch(72.99% 0.131 251.5)
XYZ	xyz(37.0145, 39.0419, 93.5629)
Luminance	0.3905 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66ACF7 #F7B166

analogous

#66F5F7 #66ACF7 #6866F7

triadic

#66ACF7 #F766AC #ACF766

tetradic

#66ACF7 #F766F5 #F7B166 #66F768

square

#66ACF7 #F766F5 #F7B166 #66F768

split-complementary

#66ACF7 #F76866 #F5F766

monochromatic

#0B6ED7 #2C8CF4 #66ACF7 #A0CCFA #DAEBFD

Accessibility & contrast

On white

2.38

#66ACF7 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.81

#66ACF7 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66ACF7

8.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66ACF7	#FFFFFF	#000000	##000000
##66ACF7	1.00	2.38	8.81	8.81
#FFFFFF	2.38	1.00	21.00	21.00
#000000	8.81	21.00	1.00	1.00
##000000	8.81	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8CB0FA

Deuteranopia (green-blind)

#79A1F5

Tritanopia (blue-blind)

#00BDC7

Achromatopsia (no color)

#A8A8A8

Design tokens & code

CSS

--color: #66acf7;
/* rgb */ color: rgb(102, 172, 247);
/* oklch */ color: oklch(73.0% 0.131 251.5);

Tailwind

colors: {
  custom: {
    50: '#9cc4fa',
    500: '#66acf7',
    950: '#000000',
  },
}

SCSS

$custom: #66acf7;
$custom-light: #9cc4fa;
$custom-dark: #000000;

JSON

{
  "hex": "#66acf7",
  "rgb": {
    "r": 102,
    "g": 172,
    "b": 247
  },
  "hsl": {
    "h": 211.034,
    "s": 90.062,
    "l": 68.431
  },
  "oklch": {
    "l": 0.72992,
    "c": 0.13072,
    "h": 251.5
  },
  "luminance": 0.39045
}

Semantic roles & 50–950 ramp

primary

#66ACF7

secondary

#F2DDC7

accent

#7700E6

background

#FAFCFF

surface

#F4F8FF

border

#CED1D7

text

#0F1217

muted

#7F8185

Preview Lab

Preview with #66ACF7

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

Preview Lab → · Contrast checker → · Palette generator →