#636BCD#636BCD

#636BCD is a mid, vivid blue. Relative luminance 0.176; OKLCH L 56.9% C 0.149 H 277.0°. Best body text is #FFFFFF at 4.65:1 contrast (WCAG AA passes).

Color values

HEX	#636BCD
RGB	rgb(99, 107, 205)
HSL	hsl(235, 51%, 60%)
HSV	hsv(235, 52%, 80%)
CMYK	cmyk(51.7%, 47.8%, 0%, 19.6%)
CIE-LAB	lab(48.98, 24.20, -51.95)
CIE-LCH	lch(48.98, 57.31, 294.98°)
OKLab	oklab(56.95% 0.0183 -0.1479)
OKLCH	oklch(56.95% 0.149 277)
XYZ	xyz(21.4193, 17.5745, 60.0093)
Luminance	0.1758 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#636BCD #CDC563

analogous

#63A0CD #636BCD #9063CD

triadic

#636BCD #CD636B #6BCD63

tetradic

#636BCD #CD63A0 #CDC563 #63CD90

square

#636BCD #CD63A0 #CDC563 #63CD90

split-complementary

#636BCD #CD9063 #A0CD63

monochromatic

#2C338A #3B44B8 #636BCD #9197DC #C0C3EB

Accessibility & contrast

On white

4.65

#636BCD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.52

#636BCD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #636BCD

4.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##636BCD	#FFFFFF	#000000	##FFFFFF
##636BCD	1.00	4.65	4.52	4.65
#FFFFFF	4.65	1.00	21.00	1.00
#000000	4.52	21.00	1.00	21.00
##FFFFFF	4.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3E79D1

Deuteranopia (green-blind)

#3370CB

Tritanopia (blue-blind)

#358092

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #636bcd;
/* rgb */ color: rgb(99, 107, 205);
/* oklch */ color: oklch(56.9% 0.149 277.0);

Tailwind

colors: {
  custom: {
    50: '#9695dd',
    500: '#636bcd',
    950: '#000000',
  },
}

SCSS

$custom: #636bcd;
$custom-light: #9695dd;
$custom-dark: #000000;

JSON

{
  "hex": "#636bcd",
  "rgb": {
    "r": 99,
    "g": 107,
    "b": 205
  },
  "hsl": {
    "h": 235.472,
    "s": 51.456,
    "l": 59.608
  },
  "oklch": {
    "l": 0.56947,
    "c": 0.14906,
    "h": 277
  },
  "luminance": 0.17576
}

Semantic roles & 50–950 ramp

primary

#636BCD

secondary

#DAD7B1

accent

#D04DDB

background

#F9F9FD

surface

#F2F1FB

border

#CCCBD4

text

#0E0D15

muted

#7E7E83

Preview Lab

Preview with #636BCD

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

Preview Lab → · Contrast checker → · Palette generator →