#643FA9#643FA9

#643FA9 is a mid, vivid violet. Relative luminance 0.091; OKLCH L 46.7% C 0.162 H 295.5°. Best body text is #FFFFFF at 7.43:1 contrast (WCAG AA passes).

Color values

HEX	#643FA9
RGB	rgb(100, 63, 169)
HSL	hsl(261, 46%, 45%)
HSV	hsv(261, 63%, 66%)
CMYK	cmyk(40.8%, 62.7%, 0%, 33.7%)
CIE-LAB	lab(36.23, 40.13, -51.43)
CIE-LCH	lch(36.23, 65.23, 307.97°)
OKLab	oklab(46.75% 0.0699 -0.1465)
OKLCH	oklch(46.75% 0.162 295.5)
XYZ	xyz(14.1926, 9.1286, 38.5427)
Luminance	0.0913 (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

#643FA9 #84A93F

analogous

#3F4FA9 #643FA9 #993FA9

triadic

#643FA9 #A9643F #3FA964

tetradic

#643FA9 #A93F4F #84A93F #3FA999

square

#643FA9 #A93F4F #84A93F #3FA999

split-complementary

#643FA9 #A9993F #4FA93F

monochromatic

#2F1E50 #4A2E7C #643FA9 #8461C4 #A68ED5

Accessibility & contrast

On white

7.43

#643FA9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.83

#643FA9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643FA9

7.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643FA9	#FFFFFF	#000000	##FFFFFF
##643FA9	1.00	7.43	2.83	7.43
#FFFFFF	7.43	1.00	21.00	1.00
#000000	2.83	21.00	1.00	21.00
##FFFFFF	7.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056AC

Deuteranopia (green-blind)

#0054A7

Tritanopia (blue-blind)

#52576E

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #643fa9;
/* rgb */ color: rgb(100, 63, 169);
/* oklch */ color: oklch(46.7% 0.162 295.5);

Tailwind

colors: {
  custom: {
    50: '#9576c3',
    500: '#643fa9',
    950: '#000000',
  },
}

SCSS

$custom: #643fa9;
$custom-light: #9576c3;
$custom-dark: #000000;

JSON

{
  "hex": "#643fa9",
  "rgb": {
    "r": 100,
    "g": 63,
    "b": 169
  },
  "hsl": {
    "h": 260.943,
    "s": 45.69,
    "l": 45.49
  },
  "oklch": {
    "l": 0.46746,
    "c": 0.16236,
    "h": 295.5
  },
  "luminance": 0.09129
}

Semantic roles & 50–950 ramp

primary

#643FA9

secondary

#ABC084

accent

#D552A8

background

#F9F7FC

surface

#F2EDF8

border

#CCC8D1

text

#0E0813

muted

#7E7B82

Preview Lab

Preview with #643FA9

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

Preview Lab → · Contrast checker → · Palette generator →