#643A96#643A96

#643A96 is a dark, vivid violet. Relative luminance 0.079; OKLCH L 44.6% C 0.146 H 301.8°. Best body text is #FFFFFF at 8.12:1 contrast (WCAG AA passes).

Color values

HEX	#643A96
RGB	rgb(100, 58, 150)
HSL	hsl(267, 44%, 41%)
HSV	hsv(267, 61%, 59%)
CMYK	cmyk(33.3%, 61.3%, 0%, 41.2%)
CIE-LAB	lab(33.85, 37.84, -43.80)
CIE-LCH	lch(33.85, 57.88, 310.82°)
OKLab	oklab(44.59% 0.077 -0.1241)
OKLCH	oklch(44.59% 0.146 301.8)
XYZ	xyz(12.2723, 7.9374, 29.7338)
Luminance	0.0794 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643A96 #6C963A

analogous

#3A3E96 #643A96 #923A96

triadic

#643A96 #96643A #3A9664

tetradic

#643A96 #963A3E #6C963A #3A9692

square

#643A96 #963A3E #6C963A #3A9692

split-complementary

#643A96 #96923A #3E963A

monochromatic

#29183E #47296A #643A96 #8251BC #A27DCD

Accessibility & contrast

On white

8.12

#643A96 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.59

#643A96 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643A96

8.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643A96	#FFFFFF	#000000	##FFFFFF
##643A96	1.00	8.12	2.59	8.12
#FFFFFF	8.12	1.00	21.00	1.00
#000000	2.59	21.00	1.00	21.00
##FFFFFF	8.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#054F99

Deuteranopia (green-blind)

#1F4F94

Tritanopia (blue-blind)

#5A4D62

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #643a96;
/* rgb */ color: rgb(100, 58, 150);
/* oklch */ color: oklch(44.6% 0.146 301.8);

Tailwind

colors: {
  custom: {
    50: '#9472b5',
    500: '#643a96',
    950: '#000000',
  },
}

SCSS

$custom: #643a96;
$custom-light: #9472b5;
$custom-dark: #000000;

JSON

{
  "hex": "#643a96",
  "rgb": {
    "r": 100,
    "g": 58,
    "b": 150
  },
  "hsl": {
    "h": 267.391,
    "s": 44.231,
    "l": 40.784
  },
  "oklch": {
    "l": 0.44594,
    "c": 0.14606,
    "h": 301.8
  },
  "luminance": 0.07937
}

Semantic roles & 50–950 ramp

primary

#643A96

secondary

#99B675

accent

#D45499

background

#F9F7FB

surface

#F2EDF6

border

#CCC8D0

text

#0D0811

muted

#7E7B80

Preview Lab

Preview with #643A96

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

Preview Lab → · Contrast checker → · Palette generator →