#636CD1#636CD1

#636CD1 is a mid, vivid blue. Relative luminance 0.180; OKLCH L 57.4% C 0.153 H 276.6°. Best body text is #000000 at 4.60:1 contrast (WCAG AA passes).

Color values

HEX	#636CD1
RGB	rgb(99, 108, 209)
HSL	hsl(235, 54%, 60%)
HSV	hsv(235, 53%, 82%)
CMYK	cmyk(52.6%, 48.3%, 0%, 18%)
CIE-LAB	lab(49.47, 24.85, -53.44)
CIE-LCH	lch(49.47, 58.93, 294.94°)
OKLab	oklab(57.4% 0.0176 -0.1523)
OKLCH	oklch(57.4% 0.153 276.6)
XYZ	xyz(22.0131, 17.9798, 62.6197)
Luminance	0.1798 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#636CD1 #D1C863

analogous

#63A3D1 #636CD1 #9163D1

triadic

#636CD1 #D1636C #6CD163

tetradic

#636CD1 #D163A3 #D1C863 #63D191

square

#636CD1 #D163A3 #D1C863 #63D191

split-complementary

#636CD1 #D19163 #A3D163

monochromatic

#2A338F #3843BF #636CD1 #9299DF #C2C5ED

Accessibility & contrast

On white

4.57

#636CD1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.60

#636CD1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #636CD1

4.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##636CD1	#FFFFFF	#000000	##000000
##636CD1	1.00	4.57	4.60	4.60
#FFFFFF	4.57	1.00	21.00	21.00
#000000	4.60	21.00	1.00	1.00
##000000	4.60	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D7AD5

Deuteranopia (green-blind)

#3071CF

Tritanopia (blue-blind)

#318294

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #636cd1;
/* rgb */ color: rgb(99, 108, 209);
/* oklch */ color: oklch(57.4% 0.153 276.6);

Tailwind

colors: {
  custom: {
    50: '#9796e0',
    500: '#636cd1',
    950: '#000000',
  },
}

SCSS

$custom: #636cd1;
$custom-light: #9796e0;
$custom-dark: #000000;

JSON

{
  "hex": "#636cd1",
  "rgb": {
    "r": 99,
    "g": 108,
    "b": 209
  },
  "hsl": {
    "h": 235.091,
    "s": 54.455,
    "l": 60.392
  },
  "oklch": {
    "l": 0.57399,
    "c": 0.1533,
    "h": 276.6
  },
  "luminance": 0.17981
}

Semantic roles & 50–950 ramp

primary

#636CD1

secondary

#DDD9B3

accent

#B524C2

background

#F9F9FD

surface

#F2F1FB

border

#CCCBD4

text

#0E0D15

muted

#7E7E83

Preview Lab

Preview with #636CD1

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

Preview Lab → · Contrast checker → · Palette generator →