#636FD5#636FD5

#636FD5 is a mid, vivid blue. Relative luminance 0.188; OKLCH L 58.2% C 0.155 H 275.5°. Best body text is #000000 at 4.77:1 contrast (WCAG AA passes).

Color values

HEX	#636FD5
RGB	rgb(99, 111, 213)
HSL	hsl(234, 58%, 61%)
HSV	hsv(234, 54%, 84%)
CMYK	cmyk(53.5%, 47.9%, 0%, 16.5%)
CIE-LAB	lab(50.48, 24.28, -54.10)
CIE-LCH	lch(50.48, 59.30, 294.17°)
OKLab	oklab(58.24% 0.0147 -0.1542)
OKLCH	oklch(58.24% 0.155 275.5)
XYZ	xyz(22.8364, 18.8241, 65.3679)
Luminance	0.1883 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#636FD5 #D5C963

analogous

#63A8D5 #636FD5 #9063D5

triadic

#636FD5 #D5636F #6FD563

tetradic

#636FD5 #D563A8 #D5C963 #63D590

square

#636FD5 #D563A8 #D5C963 #63D590

split-complementary

#636FD5 #D59063 #A8D563

monochromatic

#283495 #3544C6 #636FD5 #939CE2 #C3C8EF

Accessibility & contrast

On white

4.41

#636FD5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.77

#636FD5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #636FD5

4.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##636FD5	#FFFFFF	#000000	##000000
##636FD5	1.00	4.41	4.77	4.77
#FFFFFF	4.41	1.00	21.00	21.00
#000000	4.77	21.00	1.00	1.00
##000000	4.77	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F7DD9

Deuteranopia (green-blind)

#3174D3

Tritanopia (blue-blind)

#2C8598

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #636fd5;
/* rgb */ color: rgb(99, 111, 213);
/* oklch */ color: oklch(58.2% 0.155 275.5);

Tailwind

colors: {
  custom: {
    50: '#9798e2',
    500: '#636fd5',
    950: '#000000',
  },
}

SCSS

$custom: #636fd5;
$custom-light: #9798e2;
$custom-dark: #000000;

JSON

{
  "hex": "#636fd5",
  "rgb": {
    "r": 99,
    "g": 111,
    "b": 213
  },
  "hsl": {
    "h": 233.684,
    "s": 57.576,
    "l": 61.176
  },
  "oklch": {
    "l": 0.5824,
    "c": 0.1549,
    "h": 275.5
  },
  "luminance": 0.18826
}

Semantic roles & 50–950 ramp

primary

#636FD5

secondary

#DFDBB4

accent

#B420C5

background

#F9F9FD

surface

#F2F2FB

border

#CCCCD4

text

#0E0D15

muted

#7E7E83

Preview Lab

Preview with #636FD5

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

Preview Lab → · Contrast checker → · Palette generator →