#643CA6#643CA6

#643CA6 is a mid, vivid violet. Relative luminance 0.087; OKLCH L 46.1% C 0.163 H 296.9°. Best body text is #FFFFFF at 7.67:1 contrast (WCAG AA passes).

Color values

HEX	#643CA6
RGB	rgb(100, 60, 166)
HSL	hsl(263, 47%, 44%)
HSV	hsv(263, 64%, 65%)
CMYK	cmyk(39.8%, 63.9%, 0%, 34.9%)
CIE-LAB	lab(35.39, 40.99, -50.99)
CIE-LCH	lch(35.39, 65.43, 308.80°)
OKLab	oklab(46.07% 0.0736 -0.1453)
OKLCH	oklch(46.07% 0.163 296.9)
XYZ	xyz(13.7526, 8.6940, 37.0225)
Luminance	0.0869 (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

#643CA6 #7EA63C

analogous

#3C49A6 #643CA6 #993CA6

triadic

#643CA6 #A6643C #3CA664

tetradic

#643CA6 #A63C49 #7EA63C #3CA699

square

#643CA6 #A63C49 #7EA63C #3CA699

split-complementary

#643CA6 #A6993C #49A63C

monochromatic

#2E1C4C #492C79 #643CA6 #835BC4 #A588D4

Accessibility & contrast

On white

7.67

#643CA6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.74

#643CA6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643CA6

7.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643CA6	#FFFFFF	#000000	##FFFFFF
##643CA6	1.00	7.67	2.74	7.67
#FFFFFF	7.67	1.00	21.00	1.00
#000000	2.74	21.00	1.00	21.00
##FFFFFF	7.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054A9

Deuteranopia (green-blind)

#0052A4

Tritanopia (blue-blind)

#54546B

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #643ca6;
/* rgb */ color: rgb(100, 60, 166);
/* oklch */ color: oklch(46.1% 0.163 296.9);

Tailwind

colors: {
  custom: {
    50: '#9574c1',
    500: '#643ca6',
    950: '#000000',
  },
}

SCSS

$custom: #643ca6;
$custom-light: #9574c1;
$custom-dark: #000000;

JSON

{
  "hex": "#643ca6",
  "rgb": {
    "r": 100,
    "g": 60,
    "b": 166
  },
  "hsl": {
    "h": 262.642,
    "s": 46.903,
    "l": 44.314
  },
  "oklch": {
    "l": 0.46066,
    "c": 0.16286,
    "h": 296.9
  },
  "luminance": 0.08694
}

Semantic roles & 50–950 ramp

primary

#643CA6

secondary

#A7BE7F

accent

#D751A4

background

#F9F7FC

surface

#F2EDF8

border

#CCC8D1

text

#0E0812

muted

#7E7B81

Preview Lab

Preview with #643CA6

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

Preview Lab → · Contrast checker → · Palette generator →