#636FCD#636FCD

#636FCD is a mid, vivid blue. Relative luminance 0.184; OKLCH L 57.7% C 0.144 H 275.5°. Best body text is #000000 at 4.69:1 contrast (WCAG AA passes).

Color values

HEX	#636FCD
RGB	rgb(99, 111, 205)
HSL	hsl(233, 51%, 60%)
HSV	hsv(233, 52%, 80%)
CMYK	cmyk(51.7%, 45.9%, 0%, 19.6%)
CIE-LAB	lab(50.01, 21.75, -50.29)
CIE-LCH	lch(50.01, 54.79, 293.38°)
OKLab	oklab(57.73% 0.0137 -0.143)
OKLCH	oklch(57.73% 0.144 275.5)
XYZ	xyz(21.8460, 18.4279, 60.1516)
Luminance	0.1843 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#636FCD #CDC163

analogous

#63A4CD #636FCD #8C63CD

triadic

#636FCD #CD636F #6FCD63

tetradic

#636FCD #CD63A4 #CDC163 #63CD8C

square

#636FCD #CD63A4 #CDC163 #63CD8C

split-complementary

#636FCD #CD8C63 #A4CD63

monochromatic

#2C378A #3B49B8 #636FCD #919ADC #C0C5EB

Accessibility & contrast

On white

4.48

#636FCD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.69

#636FCD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #636FCD

4.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##636FCD	#FFFFFF	#000000	##000000
##636FCD	1.00	4.48	4.69	4.69
#FFFFFF	4.48	1.00	21.00	21.00
#000000	4.69	21.00	1.00	1.00
##000000	4.69	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#467CD0

Deuteranopia (green-blind)

#3B73CB

Tritanopia (blue-blind)

#358394

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #636fcd;
/* rgb */ color: rgb(99, 111, 205);
/* oklch */ color: oklch(57.7% 0.144 275.5);

Tailwind

colors: {
  custom: {
    50: '#9698dd',
    500: '#636fcd',
    950: '#000000',
  },
}

SCSS

$custom: #636fcd;
$custom-light: #9698dd;
$custom-dark: #000000;

JSON

{
  "hex": "#636fcd",
  "rgb": {
    "r": 99,
    "g": 111,
    "b": 205
  },
  "hsl": {
    "h": 233.208,
    "s": 51.456,
    "l": 59.608
  },
  "oklch": {
    "l": 0.57732,
    "c": 0.14369,
    "h": 275.5
  },
  "luminance": 0.18429
}

Semantic roles & 50–950 ramp

primary

#636FCD

secondary

#DAD6B1

accent

#CB4DDB

background

#F9F9FD

surface

#F2F2FB

border

#CCCCD4

text

#0E0D15

muted

#7E7E83

Preview Lab

Preview with #636FCD

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

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