#63B5FF#63B5FF

#63B5FF is a light, vivid cyan. Relative luminance 0.429; OKLCH L 75.2% C 0.134 H 247.8°. Best body text is #000000 at 9.58:1 contrast (WCAG AA passes).

Color values

HEX	#63B5FF
RGB	rgb(99, 181, 255)
HSL	hsl(208, 100%, 69%)
HSV	hsv(208, 61%, 100%)
CMYK	cmyk(61.2%, 29%, 0%, 0%)
CIE-LAB	lab(71.50, -3.35, -44.05)
CIE-LCH	lch(71.50, 44.18, 265.65°)
OKLab	oklab(75.21% -0.0507 -0.1242)
OKLCH	oklch(75.21% 0.134 247.8)
XYZ	xyz(39.7128, 42.9166, 100.7792)
Luminance	0.4292 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63B5FF #FFAD63

analogous

#63FFFB #63B5FF #6367FF

triadic

#63B5FF #FF63B5 #B5FF63

tetradic

#63B5FF #FB63FF #FFAD63 #67FF63

square

#63B5FF #FB63FF #FFAD63 #67FF63

split-complementary

#63B5FF #FF6367 #FFFB63

monochromatic

#007AE8 #2698FF #63B5FF #A0D2FF #DDEFFF

Accessibility & contrast

On white

2.19

#63B5FF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.58

#63B5FF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63B5FF

9.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63B5FF	#FFFFFF	#000000	##000000
##63B5FF	1.00	2.19	9.58	9.58
#FFFFFF	2.19	1.00	21.00	21.00
#000000	9.58	21.00	1.00	1.00
##000000	9.58	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#95B8FF

Deuteranopia (green-blind)

#80A8FE

Tritanopia (blue-blind)

#00C7CF

Achromatopsia (no color)

#AFAFAF

Design tokens & code

CSS

--color: #63b5ff;
/* rgb */ color: rgb(99, 181, 255);
/* oklch */ color: oklch(75.2% 0.134 247.8);

Tailwind

colors: {
  custom: {
    50: '#9ccaff',
    500: '#63b5ff',
    950: '#000000',
  },
}

SCSS

$custom: #63b5ff;
$custom-light: #9ccaff;
$custom-dark: #000000;

JSON

{
  "hex": "#63b5ff",
  "rgb": {
    "r": 99,
    "g": 181,
    "b": 255
  },
  "hsl": {
    "h": 208.462,
    "s": 100,
    "l": 69.412
  },
  "oklch": {
    "l": 0.7521,
    "c": 0.13414,
    "h": 247.8
  },
  "luminance": 0.4292
}

Semantic roles & 50–950 ramp

primary

#63B5FF

secondary

#F5DEC8

accent

#6D00E6

background

#FAFCFF

surface

#F4F8FF

border

#CED1D7

text

#0F1318

muted

#7F8286

Preview Lab

Preview with #63B5FF

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

Preview Lab → · Contrast checker → · Palette generator →