#636AF4#636AF4

#636AF4 is a mid, highly saturated blue. Relative luminance 0.195; OKLCH L 59.5% C 0.203 H 276.1°. Best body text is #000000 at 4.90:1 contrast (WCAG AA passes).

Color values

HEX	#636AF4
RGB	rgb(99, 106, 244)
HSL	hsl(237, 87%, 67%)
HSV	hsv(237, 59%, 96%)
CMYK	cmyk(59.4%, 56.6%, 0%, 4.3%)
CIE-LAB	lab(51.26, 37.25, -70.29)
CIE-LCH	lch(51.26, 79.55, 297.92°)
OKLab	oklab(59.46% 0.0216 -0.2019)
OKLCH	oklch(59.46% 0.203 276.1)
XYZ	xyz(26.6235, 19.4903, 87.9295)
Luminance	0.1949 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#636AF4 #F4ED63

analogous

#63B3F4 #636AF4 #A463F4

triadic

#636AF4 #F4636A #6AF463

tetradic

#636AF4 #F463B3 #F4ED63 #63F4A4

square

#636AF4 #F463B3 #F4ED63 #63F4A4

split-complementary

#636AF4 #F4A463 #B3F463

monochromatic

#0F18CE #2A33F0 #636AF4 #9CA1F8 #D5D7FC

Accessibility & contrast

On white

4.29

#636AF4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.90

#636AF4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #636AF4

4.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##636AF4	#FFFFFF	#000000	##000000
##636AF4	1.00	4.29	4.90	4.90
#FFFFFF	4.29	1.00	21.00	21.00
#000000	4.90	21.00	1.00	1.00
##000000	4.90	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#0080F9

Deuteranopia (green-blind)

#0074F1

Tritanopia (blue-blind)

#008BA5

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #636af4;
/* rgb */ color: rgb(99, 106, 244);
/* oklch */ color: oklch(59.5% 0.203 276.1);

Tailwind

colors: {
  custom: {
    50: '#9c94f9',
    500: '#636af4',
    950: '#000000',
  },
}

SCSS

$custom: #636af4;
$custom-light: #9c94f9;
$custom-dark: #000000;

JSON

{
  "hex": "#636af4",
  "rgb": {
    "r": 99,
    "g": 106,
    "b": 244
  },
  "hsl": {
    "h": 237.103,
    "s": 86.826,
    "l": 67.255
  },
  "oklch": {
    "l": 0.59463,
    "c": 0.20303,
    "h": 276.1
  },
  "luminance": 0.19492
}

Semantic roles & 50–950 ramp

primary

#636AF4

secondary

#F0EEC3

accent

#D802E3

background

#FAF9FF

surface

#F4F1FF

border

#CECBD7

text

#0F0D17

muted

#7F7E85

Preview Lab

Preview with #636AF4

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

Preview Lab → · Contrast checker → · Palette generator →