#63B4FD#63B4FD

#63B4FD is a light, vivid cyan. Relative luminance 0.424; OKLCH L 74.9% C 0.133 H 247.7°. Best body text is #000000 at 9.48:1 contrast (WCAG AA passes).

Color values

HEX	#63B4FD
RGB	rgb(99, 180, 253)
HSL	hsl(208, 97%, 69%)
HSV	hsv(208, 61%, 99%)
CMYK	cmyk(60.9%, 28.9%, 0%, 0.8%)
CIE-LAB	lab(71.13, -3.43, -43.54)
CIE-LCH	lch(71.13, 43.68, 265.49°)
OKLab	oklab(74.9% -0.0503 -0.1227)
OKLCH	oklch(74.9% 0.133 247.7)
XYZ	xyz(39.1899, 42.3833, 99.0250)
Luminance	0.4239 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63B4FD #FDAC63

analogous

#63FDF9 #63B4FD #6367FD

triadic

#63B4FD #FD63B4 #B4FD63

tetradic

#63B4FD #F963FD #FDAC63 #67FD63

square

#63B4FD #F963FD #FDAC63 #67FD63

split-complementary

#63B4FD #FD6367 #FDF963

monochromatic

#0379E3 #2797FC #63B4FD #9FD1FE #DCEEFF

Accessibility & contrast

On white

2.22

#63B4FD on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.48

#63B4FD on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63B4FD

9.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63B4FD	#FFFFFF	#000000	##000000
##63B4FD	1.00	2.22	9.48	9.48
#FFFFFF	2.22	1.00	21.00	21.00
#000000	9.48	21.00	1.00	1.00
##000000	9.48	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#94B6FF

Deuteranopia (green-blind)

#80A7FC

Tritanopia (blue-blind)

#00C5CE

Achromatopsia (no color)

#AEAEAE

Design tokens & code

CSS

--color: #63b4fd;
/* rgb */ color: rgb(99, 180, 253);
/* oklch */ color: oklch(74.9% 0.133 247.7);

Tailwind

colors: {
  custom: {
    50: '#9ccafe',
    500: '#63b4fd',
    950: '#000000',
  },
}

SCSS

$custom: #63b4fd;
$custom-light: #9ccafe;
$custom-dark: #000000;

JSON

{
  "hex": "#63b4fd",
  "rgb": {
    "r": 99,
    "g": 180,
    "b": 253
  },
  "hsl": {
    "h": 208.442,
    "s": 97.468,
    "l": 69.02
  },
  "oklch": {
    "l": 0.74895,
    "c": 0.13261,
    "h": 247.7
  },
  "luminance": 0.42387
}

Semantic roles & 50–950 ramp

primary

#63B4FD

secondary

#F4DDC7

accent

#6D00E6

background

#FAFCFF

surface

#F4F8FF

border

#CED1D7

text

#0F1318

muted

#7F8286

Preview Lab

Preview with #63B4FD

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

Preview Lab → · Contrast checker → · Palette generator →