#66AFF4#66AFF4

#66AFF4 is a light, vivid cyan. Relative luminance 0.400; OKLCH L 73.5% C 0.125 H 248.6°. Best body text is #000000 at 9.00:1 contrast (WCAG AA passes).

Color values

HEX	#66AFF4
RGB	rgb(102, 175, 244)
HSL	hsl(209, 87%, 68%)
HSV	hsv(209, 58%, 96%)
CMYK	cmyk(58.2%, 28.3%, 0%, 4.3%)
CIE-LAB	lab(69.48, -2.92, -41.24)
CIE-LCH	lch(69.48, 41.35, 265.94°)
OKLab	oklab(73.5% -0.0454 -0.1161)
OKLCH	oklch(73.5% 0.125 248.6)
XYZ	xyz(37.1327, 40.0130, 91.3369)
Luminance	0.4002 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66AFF4 #F4AB66

analogous

#66F4F2 #66AFF4 #6668F4

triadic

#66AFF4 #F466AF #AFF466

tetradic

#66AFF4 #F266F4 #F4AB66 #68F466

square

#66AFF4 #F266F4 #F4AB66 #68F466

split-complementary

#66AFF4 #F46668 #F4F266

monochromatic

#0F73D1 #2D91F0 #66AFF4 #9FCDF8 #D8EBFC

Accessibility & contrast

On white

2.33

#66AFF4 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.00

#66AFF4 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66AFF4

9.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66AFF4	#FFFFFF	#000000	##000000
##66AFF4	1.00	2.33	9.00	9.00
#FFFFFF	2.33	1.00	21.00	21.00
#000000	9.00	21.00	1.00	1.00
##000000	9.00	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#92B1F7

Deuteranopia (green-blind)

#7FA3F3

Tritanopia (blue-blind)

#00BFC7

Achromatopsia (no color)

#AAAAAA

Design tokens & code

CSS

--color: #66aff4;
/* rgb */ color: rgb(102, 175, 244);
/* oklch */ color: oklch(73.5% 0.125 248.6);

Tailwind

colors: {
  custom: {
    50: '#9cc6f8',
    500: '#66aff4',
    950: '#000000',
  },
}

SCSS

$custom: #66aff4;
$custom-light: #9cc6f8;
$custom-dark: #000000;

JSON

{
  "hex": "#66aff4",
  "rgb": {
    "r": 102,
    "g": 175,
    "b": 244
  },
  "hsl": {
    "h": 209.155,
    "s": 86.585,
    "l": 67.843
  },
  "oklch": {
    "l": 0.73496,
    "c": 0.12464,
    "h": 248.6
  },
  "luminance": 0.40016
}

Semantic roles & 50–950 ramp

primary

#66AFF4

secondary

#F1DAC5

accent

#7002E3

background

#FAFCFF

surface

#F4F8FF

border

#CED1D7

text

#0F1317

muted

#7F8285

Preview Lab

Preview with #66AFF4

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

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