#636DCD#636DCD

#636DCD is a mid, vivid blue. Relative luminance 0.180; OKLCH L 57.3% C 0.146 H 276.3°. Best body text is #000000 at 4.60:1 contrast (WCAG AA passes).

Color values

HEX	#636DCD
RGB	rgb(99, 109, 205)
HSL	hsl(234, 51%, 60%)
HSV	hsv(234, 52%, 80%)
CMYK	cmyk(51.7%, 46.8%, 0%, 19.6%)
CIE-LAB	lab(49.49, 22.97, -51.12)
CIE-LCH	lch(49.49, 56.05, 294.20°)
OKLab	oklab(57.34% 0.016 -0.1455)
OKLCH	oklch(57.34% 0.146 276.3)
XYZ	xyz(21.6302, 17.9964, 60.0796)
Luminance	0.1800 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#636DCD #CDC363

analogous

#63A2CD #636DCD #8E63CD

triadic

#636DCD #CD636D #6DCD63

tetradic

#636DCD #CD63A2 #CDC363 #63CD8E

square

#636DCD #CD63A2 #CDC363 #63CD8E

split-complementary

#636DCD #CD8E63 #A2CD63

monochromatic

#2C358A #3B47B8 #636DCD #9198DC #C0C4EB

Accessibility & contrast

On white

4.57

#636DCD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.60

#636DCD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #636DCD

4.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##636DCD	#FFFFFF	#000000	##000000
##636DCD	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)

#427AD1

Deuteranopia (green-blind)

#3772CB

Tritanopia (blue-blind)

#358293

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #636dcd;
/* rgb */ color: rgb(99, 109, 205);
/* oklch */ color: oklch(57.3% 0.146 276.3);

Tailwind

colors: {
  custom: {
    50: '#9696dd',
    500: '#636dcd',
    950: '#000000',
  },
}

SCSS

$custom: #636dcd;
$custom-light: #9696dd;
$custom-dark: #000000;

JSON

{
  "hex": "#636dcd",
  "rgb": {
    "r": 99,
    "g": 109,
    "b": 205
  },
  "hsl": {
    "h": 234.34,
    "s": 51.456,
    "l": 59.608
  },
  "oklch": {
    "l": 0.57338,
    "c": 0.14637,
    "h": 276.3
  },
  "luminance": 0.17998
}

Semantic roles & 50–950 ramp

primary

#636DCD

secondary

#DAD7B1

accent

#CE4DDB

background

#F9F9FD

surface

#F2F2FB

border

#CCCCD4

text

#0E0D15

muted

#7E7E83

Preview Lab

Preview with #636DCD

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

Preview Lab → · Contrast checker → · Palette generator →