#66ADFC#66ADFC

#66ADFC is a light, vivid cyan. Relative luminance 0.397; OKLCH L 73.5% C 0.136 H 252.4°. Best body text is #000000 at 8.95:1 contrast (WCAG AA passes).

Color values

HEX	#66ADFC
RGB	rgb(102, 173, 252)
HSL	hsl(212, 96%, 69%)
HSV	hsv(212, 60%, 99%)
CMYK	cmyk(59.5%, 31.3%, 0%, 1.2%)
CIE-LAB	lab(69.28, 0.71, -45.90)
CIE-LCH	lch(69.28, 45.90, 270.88°)
OKLab	oklab(73.46% -0.0411 -0.1296)
OKLCH	oklch(73.46% 0.136 252.4)
XYZ	xyz(37.9874, 39.7367, 97.7446)
Luminance	0.3974 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66ADFC #FCB566

analogous

#66F8FC #66ADFC #6A66FC

triadic

#66ADFC #FC66AD #ADFC66

tetradic

#66ADFC #FC66F8 #FCB566 #66FC6A

square

#66ADFC #FC66F8 #FCB566 #66FC6A

split-complementary

#66ADFC #FC6A66 #F8FC66

monochromatic

#046EE3 #2A8DFB #66ADFC #A2CDFD #DEEDFE

Accessibility & contrast

On white

2.35

#66ADFC on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.95

#66ADFC on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66ADFC

8.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66ADFC	#FFFFFF	#000000	##000000
##66ADFC	1.00	2.35	8.95	8.95
#FFFFFF	2.35	1.00	21.00	21.00
#000000	8.95	21.00	1.00	1.00
##000000	8.95	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8CB1FF

Deuteranopia (green-blind)

#78A3FA

Tritanopia (blue-blind)

#00BFC9

Achromatopsia (no color)

#A9A9A9

Design tokens & code

CSS

--color: #66adfc;
/* rgb */ color: rgb(102, 173, 252);
/* oklch */ color: oklch(73.5% 0.136 252.4);

Tailwind

colors: {
  custom: {
    50: '#9dc5fd',
    500: '#66adfc',
    950: '#000000',
  },
}

SCSS

$custom: #66adfc;
$custom-light: #9dc5fd;
$custom-dark: #000000;

JSON

{
  "hex": "#66adfc",
  "rgb": {
    "r": 102,
    "g": 173,
    "b": 252
  },
  "hsl": {
    "h": 211.6,
    "s": 96.154,
    "l": 69.412
  },
  "oklch": {
    "l": 0.73458,
    "c": 0.13594,
    "h": 252.4
  },
  "luminance": 0.3974
}

Semantic roles & 50–950 ramp

primary

#66ADFC

secondary

#F5E0C9

accent

#7900E6

background

#FAFCFF

surface

#F4F8FF

border

#CED1D7

text

#0F1218

muted

#7F8186

Preview Lab

Preview with #66ADFC

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

Preview Lab → · Contrast checker → · Palette generator →