#66ACF8#66ACF8

#66ACF8 is a light, vivid cyan. Relative luminance 0.391; OKLCH L 73.0% C 0.132 H 251.8°. Best body text is #000000 at 8.82:1 contrast (WCAG AA passes).

Color values

HEX	#66ACF8
RGB	rgb(102, 172, 248)
HSL	hsl(211, 91%, 69%)
HSV	hsv(211, 59%, 97%)
CMYK	cmyk(58.9%, 30.6%, 0%, 2.7%)
CIE-LAB	lab(68.83, 0.01, -44.44)
CIE-LCH	lch(68.83, 44.44, 270.01°)
OKLab	oklab(73.04% -0.0411 -0.1253)
OKLCH	oklch(73.04% 0.132 251.8)
XYZ	xyz(37.1692, 39.1038, 94.3778)
Luminance	0.3911 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66ACF8 #F8B266

analogous

#66F5F8 #66ACF8 #6966F8

triadic

#66ACF8 #F866AC #ACF866

tetradic

#66ACF8 #F866F5 #F8B266 #66F869

square

#66ACF8 #F866F5 #F8B266 #66F869

split-complementary

#66ACF8 #F86966 #F5F866

monochromatic

#0A6EDA #2B8CF5 #66ACF8 #A1CCFB #DBEBFD

Accessibility & contrast

On white

2.38

#66ACF8 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.82

#66ACF8 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66ACF8

8.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66ACF8	#FFFFFF	#000000	##000000
##66ACF8	1.00	2.38	8.82	8.82
#FFFFFF	2.38	1.00	21.00	21.00
#000000	8.82	21.00	1.00	1.00
##000000	8.82	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8CB0FB

Deuteranopia (green-blind)

#79A2F6

Tritanopia (blue-blind)

#00BEC7

Achromatopsia (no color)

#A8A8A8

Design tokens & code

CSS

--color: #66acf8;
/* rgb */ color: rgb(102, 172, 248);
/* oklch */ color: oklch(73.0% 0.132 251.8);

Tailwind

colors: {
  custom: {
    50: '#9cc4fb',
    500: '#66acf8',
    950: '#000000',
  },
}

SCSS

$custom: #66acf8;
$custom-light: #9cc4fb;
$custom-dark: #000000;

JSON

{
  "hex": "#66acf8",
  "rgb": {
    "r": 102,
    "g": 172,
    "b": 248
  },
  "hsl": {
    "h": 211.233,
    "s": 91.25,
    "l": 68.627
  },
  "oklch": {
    "l": 0.73042,
    "c": 0.13193,
    "h": 251.8
  },
  "luminance": 0.39107
}

Semantic roles & 50–950 ramp

primary

#66ACF8

secondary

#F3DEC7

accent

#7700E6

background

#FAFCFF

surface

#F4F8FF

border

#CED1D7

text

#0F1217

muted

#7F8185

Preview Lab

Preview with #66ACF8

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

Preview Lab → · Contrast checker → · Palette generator →