#66ADF8#66ADF8

#66ADF8 is a light, vivid cyan. Relative luminance 0.395; OKLCH L 73.3% C 0.131 H 251.2°. Best body text is #000000 at 8.90:1 contrast (WCAG AA passes).

Color values

HEX	#66ADF8
RGB	rgb(102, 173, 248)
HSL	hsl(211, 91%, 69%)
HSV	hsv(211, 59%, 97%)
CMYK	cmyk(58.9%, 30.2%, 0%, 2.7%)
CIE-LAB	lab(69.10, -0.55, -44.01)
CIE-LCH	lch(69.10, 44.01, 269.28°)
OKLab	oklab(73.26% -0.0422 -0.1241)
OKLCH	oklch(73.26% 0.131 251.2)
XYZ	xyz(37.3602, 39.4859, 94.4414)
Luminance	0.3949 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66ADF8 #F8B166

analogous

#66F6F8 #66ADF8 #6866F8

triadic

#66ADF8 #F866AD #ADF866

tetradic

#66ADF8 #F866F6 #F8B166 #66F868

square

#66ADF8 #F866F6 #F8B166 #66F868

split-complementary

#66ADF8 #F86866 #F6F866

monochromatic

#0A6FDA #2B8EF5 #66ADF8 #A1CCFB #DBECFD

Accessibility & contrast

On white

2.36

#66ADF8 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.90

#66ADF8 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66ADF8

8.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66ADF8	#FFFFFF	#000000	##000000
##66ADF8	1.00	2.36	8.90	8.90
#FFFFFF	2.36	1.00	21.00	21.00
#000000	8.90	21.00	1.00	1.00
##000000	8.90	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8DB1FB

Deuteranopia (green-blind)

#7AA2F7

Tritanopia (blue-blind)

#00BEC8

Achromatopsia (no color)

#A9A9A9

Design tokens & code

CSS

--color: #66adf8;
/* rgb */ color: rgb(102, 173, 248);
/* oklch */ color: oklch(73.3% 0.131 251.2);

Tailwind

colors: {
  custom: {
    50: '#9cc5fb',
    500: '#66adf8',
    950: '#000000',
  },
}

SCSS

$custom: #66adf8;
$custom-light: #9cc5fb;
$custom-dark: #000000;

JSON

{
  "hex": "#66adf8",
  "rgb": {
    "r": 102,
    "g": 173,
    "b": 248
  },
  "hsl": {
    "h": 210.822,
    "s": 91.25,
    "l": 68.627
  },
  "oklch": {
    "l": 0.73258,
    "c": 0.13107,
    "h": 251.2
  },
  "luminance": 0.39489
}

Semantic roles & 50–950 ramp

primary

#66ADF8

secondary

#F3DDC7

accent

#7600E6

background

#FAFCFF

surface

#F4F8FF

border

#CED1D7

text

#0F1217

muted

#7F8185

Preview Lab

Preview with #66ADF8

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

Preview Lab → · Contrast checker → · Palette generator →