#643FA7#643FA7

#643FA7 is a mid, vivid violet. Relative luminance 0.091; OKLCH L 46.6% C 0.160 H 296.0°. Best body text is #FFFFFF at 7.47:1 contrast (WCAG AA passes).

Color values

HEX	#643FA7
RGB	rgb(100, 63, 167)
HSL	hsl(261, 45%, 45%)
HSV	hsv(261, 62%, 65%)
CMYK	cmyk(40.1%, 62.3%, 0%, 34.5%)
CIE-LAB	lab(36.09, 39.58, -50.46)
CIE-LCH	lch(36.09, 64.13, 308.11°)
OKLab	oklab(46.6% 0.07 -0.1437)
OKLCH	oklch(46.6% 0.16 296)
XYZ	xyz(14.0063, 9.0541, 37.5614)
Luminance	0.0905 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643FA7 #82A73F

analogous

#3F4EA7 #643FA7 #983FA7

triadic

#643FA7 #A7643F #3FA764

tetradic

#643FA7 #A73F4E #82A73F #3FA798

square

#643FA7 #A73F4E #82A73F #3FA798

split-complementary

#643FA7 #A7983F #4EA73F

monochromatic

#2F1D4E #492E7B #643FA7 #8360C3 #A68DD4

Accessibility & contrast

On white

7.47

#643FA7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.81

#643FA7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643FA7

7.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643FA7	#FFFFFF	#000000	##FFFFFF
##643FA7	1.00	7.47	2.81	7.47
#FFFFFF	7.47	1.00	21.00	1.00
#000000	2.81	21.00	1.00	21.00
##FFFFFF	7.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056AA

Deuteranopia (green-blind)

#0553A5

Tritanopia (blue-blind)

#53566D

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #643fa7;
/* rgb */ color: rgb(100, 63, 167);
/* oklch */ color: oklch(46.6% 0.160 296.0);

Tailwind

colors: {
  custom: {
    50: '#9576c2',
    500: '#643fa7',
    950: '#000000',
  },
}

SCSS

$custom: #643fa7;
$custom-light: #9576c2;
$custom-dark: #000000;

JSON

{
  "hex": "#643fa7",
  "rgb": {
    "r": 100,
    "g": 63,
    "b": 167
  },
  "hsl": {
    "h": 261.346,
    "s": 45.217,
    "l": 45.098
  },
  "oklch": {
    "l": 0.46597,
    "c": 0.15986,
    "h": 296
  },
  "luminance": 0.09054
}

Semantic roles & 50–950 ramp

primary

#643FA7

secondary

#A9BF83

accent

#D553A7

background

#F9F7FC

surface

#F2EDF8

border

#CCC8D1

text

#0E0812

muted

#7E7B81

Preview Lab

Preview with #643FA7

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

Preview Lab → · Contrast checker → · Palette generator →