#66ADF7#66ADF7

#66ADF7 is a light, vivid cyan. Relative luminance 0.394; OKLCH L 73.2% C 0.130 H 250.9°. Best body text is #000000 at 8.89:1 contrast (WCAG AA passes).

Color values

HEX	#66ADF7
RGB	rgb(102, 173, 247)
HSL	hsl(211, 90%, 68%)
HSV	hsv(211, 59%, 97%)
CMYK	cmyk(58.7%, 30%, 0%, 3.1%)
CIE-LAB	lab(69.06, -0.87, -43.53)
CIE-LCH	lch(69.06, 43.54, 268.86°)
OKLab	oklab(73.21% -0.0425 -0.1227)
OKLCH	oklch(73.21% 0.13 250.9)
XYZ	xyz(37.2055, 39.4240, 93.6266)
Luminance	0.3943 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66ADF7 #F7B066

analogous

#66F5F7 #66ADF7 #6766F7

triadic

#66ADF7 #F766AD #ADF766

tetradic

#66ADF7 #F766F5 #F7B066 #66F767

square

#66ADF7 #F766F5 #F7B066 #66F767

split-complementary

#66ADF7 #F76766 #F5F766

monochromatic

#0B6FD7 #2C8EF4 #66ADF7 #A0CCFA #DAEBFD

Accessibility & contrast

On white

2.36

#66ADF7 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.89

#66ADF7 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66ADF7

8.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66ADF7	#FFFFFF	#000000	##000000
##66ADF7	1.00	2.36	8.89	8.89
#FFFFFF	2.36	1.00	21.00	21.00
#000000	8.89	21.00	1.00	1.00
##000000	8.89	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8EB0FA

Deuteranopia (green-blind)

#7BA2F6

Tritanopia (blue-blind)

#00BEC7

Achromatopsia (no color)

#A9A9A9

Design tokens & code

CSS

--color: #66adf7;
/* rgb */ color: rgb(102, 173, 247);
/* oklch */ color: oklch(73.2% 0.130 250.9);

Tailwind

colors: {
  custom: {
    50: '#9cc5fa',
    500: '#66adf7',
    950: '#000000',
  },
}

SCSS

$custom: #66adf7;
$custom-light: #9cc5fa;
$custom-dark: #000000;

JSON

{
  "hex": "#66adf7",
  "rgb": {
    "r": 102,
    "g": 173,
    "b": 247
  },
  "hsl": {
    "h": 210.621,
    "s": 90.062,
    "l": 68.431
  },
  "oklch": {
    "l": 0.73208,
    "c": 0.12986,
    "h": 250.9
  },
  "luminance": 0.39427
}

Semantic roles & 50–950 ramp

primary

#66ADF7

secondary

#F2DDC7

accent

#7500E6

background

#FAFCFF

surface

#F4F8FF

border

#CED1D7

text

#0F1217

muted

#7F8185

Preview Lab

Preview with #66ADF7

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

Preview Lab → · Contrast checker → · Palette generator →