#63AFF4#63AFF4

#63AFF4 is a light, vivid cyan. Relative luminance 0.398; OKLCH L 73.4% C 0.126 H 247.8°. Best body text is #000000 at 8.97:1 contrast (WCAG AA passes).

Color values

HEX	#63AFF4
RGB	rgb(99, 175, 244)
HSL	hsl(209, 87%, 67%)
HSV	hsv(209, 59%, 96%)
CMYK	cmyk(59.4%, 28.3%, 0%, 4.3%)
CIE-LAB	lab(69.36, -3.49, -41.45)
CIE-LCH	lch(69.36, 41.59, 265.18°)
OKLab	oklab(73.37% -0.0477 -0.1167)
OKLCH	oklch(73.37% 0.126 247.8)
XYZ	xyz(36.7987, 39.8408, 91.3212)
Luminance	0.3984 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63AFF4 #F4A863

analogous

#63F4F1 #63AFF4 #6367F4

triadic

#63AFF4 #F463AF #AFF463

tetradic

#63AFF4 #F163F4 #F4A863 #67F463

square

#63AFF4 #F163F4 #F4A863 #67F463

split-complementary

#63AFF4 #F46367 #F4F163

monochromatic

#0F73CE #2A92F0 #63AFF4 #9CCCF8 #D5EAFC

Accessibility & contrast

On white

2.34

#63AFF4 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.97

#63AFF4 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63AFF4

8.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63AFF4	#FFFFFF	#000000	##000000
##63AFF4	1.00	2.34	8.97	8.97
#FFFFFF	2.34	1.00	21.00	21.00
#000000	8.97	21.00	1.00	1.00
##000000	8.97	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#91B1F7

Deuteranopia (green-blind)

#7EA3F3

Tritanopia (blue-blind)

#00BFC7

Achromatopsia (no color)

#A9A9A9

Design tokens & code

CSS

--color: #63aff4;
/* rgb */ color: rgb(99, 175, 244);
/* oklch */ color: oklch(73.4% 0.126 247.8);

Tailwind

colors: {
  custom: {
    50: '#9ac6f8',
    500: '#63aff4',
    950: '#000000',
  },
}

SCSS

$custom: #63aff4;
$custom-light: #9ac6f8;
$custom-dark: #000000;

JSON

{
  "hex": "#63aff4",
  "rgb": {
    "r": 99,
    "g": 175,
    "b": 244
  },
  "hsl": {
    "h": 208.552,
    "s": 86.826,
    "l": 67.255
  },
  "oklch": {
    "l": 0.73366,
    "c": 0.12606,
    "h": 247.8
  },
  "luminance": 0.39844
}

Semantic roles & 50–950 ramp

primary

#63AFF4

secondary

#F0D8C3

accent

#6D02E3

background

#FAFCFF

surface

#F4F8FF

border

#CED1D7

text

#0F1317

muted

#7F8285

Preview Lab

Preview with #63AFF4

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

Preview Lab → · Contrast checker → · Palette generator →