#636FC0#636FC0

#636FC0 is a mid, vivid blue. Relative luminance 0.178; OKLCH L 56.9% C 0.125 H 275.3°. Best body text is #FFFFFF at 4.60:1 contrast (WCAG AA passes).

Color values

HEX	#636FC0
RGB	rgb(99, 111, 192)
HSL	hsl(232, 42%, 57%)
HSV	hsv(232, 48%, 75%)
CMYK	cmyk(48.4%, 42.2%, 0%, 24.7%)
CIE-LAB	lab(49.28, 17.68, -44.00)
CIE-LCH	lch(49.28, 47.42, 291.89°)
OKLab	oklab(56.94% 0.0116 -0.1246)
OKLCH	oklch(56.94% 0.125 275.3)
XYZ	xyz(20.3415, 17.8261, 52.2279)
Luminance	0.1783 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#636FC0 #C0B463

analogous

#639EC0 #636FC0 #8663C0

triadic

#636FC0 #C0636F #6FC063

tetradic

#636FC0 #C0639E #C0B463 #63C086

square

#636FC0 #C0639E #C0B463 #63C086

split-complementary

#636FC0 #C08663 #9EC063

monochromatic

#313A78 #424FA4 #636FC0 #8F97D2 #BABFE3

Accessibility & contrast

On white

4.60

#636FC0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.57

#636FC0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #636FC0

4.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##636FC0	#FFFFFF	#000000	##FFFFFF
##636FC0	1.00	4.60	4.57	4.60
#FFFFFF	4.60	1.00	21.00	1.00
#000000	4.57	21.00	1.00	21.00
##FFFFFF	4.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F79C3

Deuteranopia (green-blind)

#4772BE

Tritanopia (blue-blind)

#3F808E

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #636fc0;
/* rgb */ color: rgb(99, 111, 192);
/* oklch */ color: oklch(56.9% 0.125 275.3);

Tailwind

colors: {
  custom: {
    50: '#9598d3',
    500: '#636fc0',
    950: '#000000',
  },
}

SCSS

$custom: #636fc0;
$custom-light: #9598d3;
$custom-dark: #000000;

JSON

{
  "hex": "#636fc0",
  "rgb": {
    "r": 99,
    "g": 111,
    "b": 192
  },
  "hsl": {
    "h": 232.258,
    "s": 42.466,
    "l": 57.059
  },
  "oklch": {
    "l": 0.56943,
    "c": 0.12512,
    "h": 275.3
  },
  "luminance": 0.17827
}

Semantic roles & 50–950 ramp

primary

#636FC0

secondary

#D2CDAC

accent

#C256D2

background

#F9F9FD

surface

#F2F2FA

border

#CCCCD3

text

#0E0D14

muted

#7E7E83

Preview Lab

Preview with #636FC0

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

Preview Lab → · Contrast checker → · Palette generator →