#636ADE#636ADE

#636ADE is a mid, vivid blue. Relative luminance 0.182; OKLCH L 57.9% C 0.174 H 276.9°. Best body text is #000000 at 4.65:1 contrast (WCAG AA passes).

Color values

HEX	#636ADE
RGB	rgb(99, 106, 222)
HSL	hsl(237, 65%, 63%)
HSV	hsv(237, 55%, 87%)
CMYK	cmyk(55.4%, 52.3%, 0%, 12.9%)
CIE-LAB	lab(49.78, 30.21, -60.33)
CIE-LCH	lch(49.78, 67.47, 296.60°)
OKLab	oklab(57.89% 0.0209 -0.1726)
OKLCH	oklch(57.89% 0.174 276.9)
XYZ	xyz(23.4802, 18.2330, 71.3751)
Luminance	0.1824 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#636ADE #DED763

analogous

#63A8DE #636ADE #9963DE

triadic

#636ADE #DE636A #6ADE63

tetradic

#636ADE #DE63A8 #DED763 #63DE99

square

#636ADE #DE63A8 #DED763 #63DE99

split-complementary

#636ADE #DE9963 #A8DE63

monochromatic

#232AA4 #303AD3 #636ADE #969AE9 #C8CAF3

Accessibility & contrast

On white

4.52

#636ADE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.65

#636ADE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #636ADE

4.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##636ADE	#FFFFFF	#000000	##000000
##636ADE	1.00	4.52	4.65	4.65
#FFFFFF	4.52	1.00	21.00	21.00
#000000	4.65	21.00	1.00	1.00
##000000	4.65	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#287CE2

Deuteranopia (green-blind)

#0B71DC

Tritanopia (blue-blind)

#21849A

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #636ade;
/* rgb */ color: rgb(99, 106, 222);
/* oklch */ color: oklch(57.9% 0.174 276.9);

Tailwind

colors: {
  custom: {
    50: '#9994e9',
    500: '#636ade',
    950: '#000000',
  },
}

SCSS

$custom: #636ade;
$custom-light: #9994e9;
$custom-dark: #000000;

JSON

{
  "hex": "#636ade",
  "rgb": {
    "r": 99,
    "g": 106,
    "b": 222
  },
  "hsl": {
    "h": 236.585,
    "s": 65.079,
    "l": 62.941
  },
  "oklch": {
    "l": 0.5789,
    "c": 0.17383,
    "h": 276.9
  },
  "luminance": 0.18235
}

Semantic roles & 50–950 ramp

primary

#636ADE

secondary

#E5E2B8

accent

#C319CD

background

#F9F9FE

surface

#F2F1FD

border

#CCCBD5

text

#0F0D16

muted

#7E7E84

Preview Lab

Preview with #636ADE

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

Preview Lab → · Contrast checker → · Palette generator →