#636ADD#636ADD

#636ADD is a mid, vivid blue. Relative luminance 0.182; OKLCH L 57.8% C 0.172 H 276.9°. Best body text is #000000 at 4.64:1 contrast (WCAG AA passes).

Color values

HEX	#636ADD
RGB	rgb(99, 106, 221)
HSL	hsl(237, 64%, 63%)
HSV	hsv(237, 55%, 87%)
CMYK	cmyk(55.2%, 52%, 0%, 13.3%)
CIE-LAB	lab(49.71, 29.89, -59.87)
CIE-LCH	lch(49.71, 66.91, 296.53°)
OKLab	oklab(57.82% 0.0208 -0.1712)
OKLCH	oklch(57.82% 0.172 276.9)
XYZ	xyz(23.3466, 18.1796, 70.6714)
Luminance	0.1818 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#636ADD #DDD663

analogous

#63A7DD #636ADD #9963DD

triadic

#636ADD #DD636A #6ADD63

tetradic

#636ADD #DD63A7 #DDD663 #63DD99

square

#636ADD #DD63A7 #DDD663 #63DD99

split-complementary

#636ADD #DD9963 #A7DD63

monochromatic

#232BA2 #313AD2 #636ADD #959AE8 #C7CAF3

Accessibility & contrast

On white

4.53

#636ADD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.64

#636ADD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #636ADD

4.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##636ADD	#FFFFFF	#000000	##000000
##636ADD	1.00	4.53	4.64	4.64
#FFFFFF	4.53	1.00	21.00	21.00
#000000	4.64	21.00	1.00	1.00
##000000	4.64	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#297BE1

Deuteranopia (green-blind)

#1071DB

Tritanopia (blue-blind)

#228499

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #636add;
/* rgb */ color: rgb(99, 106, 221);
/* oklch */ color: oklch(57.8% 0.172 276.9);

Tailwind

colors: {
  custom: {
    50: '#9994e8',
    500: '#636add',
    950: '#000000',
  },
}

SCSS

$custom: #636add;
$custom-light: #9994e8;
$custom-dark: #000000;

JSON

{
  "hex": "#636add",
  "rgb": {
    "r": 99,
    "g": 106,
    "b": 221
  },
  "hsl": {
    "h": 236.557,
    "s": 64.211,
    "l": 62.745
  },
  "oklch": {
    "l": 0.57821,
    "c": 0.17247,
    "h": 276.9
  },
  "luminance": 0.18181
}

Semantic roles & 50–950 ramp

primary

#636ADD

secondary

#E4E1B8

accent

#C219CC

background

#F9F9FE

surface

#F2F1FD

border

#CCCBD5

text

#0F0D16

muted

#7E7E84

Preview Lab

Preview with #636ADD

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

Preview Lab → · Contrast checker → · Palette generator →