#63B5FB#63B5FB

#63B5FB is a light, vivid cyan. Relative luminance 0.427; OKLCH L 75.0% C 0.130 H 246.4°. Best body text is #000000 at 9.53:1 contrast (WCAG AA passes).

Color values

HEX	#63B5FB
RGB	rgb(99, 181, 251)
HSL	hsl(208, 95%, 69%)
HSV	hsv(208, 61%, 98%)
CMYK	cmyk(60.6%, 27.9%, 0%, 1.6%)
CIE-LAB	lab(71.32, -4.61, -42.16)
CIE-LCH	lch(71.32, 42.41, 263.75°)
OKLab	oklab(75.02% -0.0519 -0.1187)
OKLCH	oklch(75.02% 0.13 246.4)
XYZ	xyz(39.0756, 42.6617, 97.4234)
Luminance	0.4266 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63B5FB #FBA963

analogous

#63FBF5 #63B5FB #6369FB

triadic

#63B5FB #FB63B5 #B5FB63

tetradic

#63B5FB #F563FB #FBA963 #69FB63

square

#63B5FB #F563FB #FBA963 #69FB63

split-complementary

#63B5FB #FB6369 #FBF563

monochromatic

#067ADE #2799F9 #63B5FB #9FD1FD #DAEEFE

Accessibility & contrast

On white

2.20

#63B5FB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.53

#63B5FB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63B5FB

9.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63B5FB	#FFFFFF	#000000	##000000
##63B5FB	1.00	2.20	9.53	9.53
#FFFFFF	2.20	1.00	21.00	21.00
#000000	9.53	21.00	1.00	1.00
##000000	9.53	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#97B7FE

Deuteranopia (green-blind)

#82A8FA

Tritanopia (blue-blind)

#00C6CD

Achromatopsia (no color)

#AFAFAF

Design tokens & code

CSS

--color: #63b5fb;
/* rgb */ color: rgb(99, 181, 251);
/* oklch */ color: oklch(75.0% 0.130 246.4);

Tailwind

colors: {
  custom: {
    50: '#9bcbfd',
    500: '#63b5fb',
    950: '#000000',
  },
}

SCSS

$custom: #63b5fb;
$custom-light: #9bcbfd;
$custom-dark: #000000;

JSON

{
  "hex": "#63b5fb",
  "rgb": {
    "r": 99,
    "g": 181,
    "b": 251
  },
  "hsl": {
    "h": 207.632,
    "s": 95,
    "l": 68.627
  },
  "oklch": {
    "l": 0.75016,
    "c": 0.12956,
    "h": 246.4
  },
  "luminance": 0.42665
}

Semantic roles & 50–950 ramp

primary

#63B5FB

secondary

#F4DBC6

accent

#6A00E6

background

#FAFCFF

surface

#F4F8FF

border

#CED1D7

text

#0F1317

muted

#7F8285

Preview Lab

Preview with #63B5FB

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

Preview Lab → · Contrast checker → · Palette generator →