#636BC0#636BC0

#636BC0 is a mid, vivid blue. Relative luminance 0.170; OKLCH L 56.1% C 0.131 H 277.3°. Best body text is #FFFFFF at 4.78:1 contrast (WCAG AA passes).

Color values

HEX	#636BC0
RGB	rgb(99, 107, 192)
HSL	hsl(235, 42%, 57%)
HSV	hsv(235, 48%, 75%)
CMYK	cmyk(48.4%, 44.3%, 0%, 24.7%)
CIE-LAB	lab(48.23, 20.14, -45.68)
CIE-LCH	lch(48.23, 49.92, 293.79°)
OKLab	oklab(56.14% 0.0165 -0.1295)
OKLCH	oklch(56.14% 0.131 277.3)
XYZ	xyz(19.9148, 16.9727, 52.0856)
Luminance	0.1697 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#636BC0 #C0B863

analogous

#639AC0 #636BC0 #8A63C0

triadic

#636BC0 #C0636B #6BC063

tetradic

#636BC0 #C0639A #C0B863 #63C08A

square

#636BC0 #C0639A #C0B863 #63C08A

split-complementary

#636BC0 #C08A63 #9AC063

monochromatic

#313778 #424BA4 #636BC0 #8F94D2 #BABEE3

Accessibility & contrast

On white

4.78

#636BC0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.39

#636BC0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #636BC0

4.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##636BC0	#FFFFFF	#000000	##FFFFFF
##636BC0	1.00	4.78	4.39	4.78
#FFFFFF	4.78	1.00	21.00	1.00
#000000	4.39	21.00	1.00	21.00
##FFFFFF	4.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4976C3

Deuteranopia (green-blind)

#416FBE

Tritanopia (blue-blind)

#407D8C

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #636bc0;
/* rgb */ color: rgb(99, 107, 192);
/* oklch */ color: oklch(56.1% 0.131 277.3);

Tailwind

colors: {
  custom: {
    50: '#9595d3',
    500: '#636bc0',
    950: '#000000',
  },
}

SCSS

$custom: #636bc0;
$custom-light: #9595d3;
$custom-dark: #000000;

JSON

{
  "hex": "#636bc0",
  "rgb": {
    "r": 99,
    "g": 107,
    "b": 192
  },
  "hsl": {
    "h": 234.839,
    "s": 42.466,
    "l": 57.059
  },
  "oklch": {
    "l": 0.56135,
    "c": 0.13059,
    "h": 277.3
  },
  "luminance": 0.16974
}

Semantic roles & 50–950 ramp

primary

#636BC0

secondary

#D2CFAC

accent

#C856D2

background

#F9F9FD

surface

#F2F1FA

border

#CCCBD3

text

#0E0D14

muted

#7E7E83

Preview Lab

Preview with #636BC0

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

Preview Lab → · Contrast checker → · Palette generator →