#643C96#643C96

#643C96 is a dark, vivid violet. Relative luminance 0.081; OKLCH L 44.9% C 0.143 H 301.3°. Best body text is #FFFFFF at 7.99:1 contrast (WCAG AA passes).

Color values

HEX	#643C96
RGB	rgb(100, 60, 150)
HSL	hsl(267, 43%, 41%)
HSV	hsv(267, 60%, 59%)
CMYK	cmyk(33.3%, 60%, 0%, 41.2%)
CIE-LAB	lab(34.28, 36.70, -43.12)
CIE-LCH	lch(34.28, 56.62, 310.40°)
OKLab	oklab(44.91% 0.0744 -0.1221)
OKLCH	oklch(44.91% 0.143 301.3)
XYZ	xyz(12.3751, 8.1430, 29.7680)
Luminance	0.0814 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643C96 #6E963C

analogous

#3C4196 #643C96 #913C96

triadic

#643C96 #96643C #3C9664

tetradic

#643C96 #963C41 #6E963C #3C9691

square

#643C96 #963C41 #6E963C #3C9691

split-complementary

#643C96 #96913C #41963C

monochromatic

#2A193F #472B6A #643C96 #8254BB #A280CC

Accessibility & contrast

On white

7.99

#643C96 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.63

#643C96 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643C96

7.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643C96	#FFFFFF	#000000	##FFFFFF
##643C96	1.00	7.99	2.63	7.99
#FFFFFF	7.99	1.00	21.00	1.00
#000000	2.63	21.00	1.00	21.00
##FFFFFF	7.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0E5099

Deuteranopia (green-blind)

#225094

Tritanopia (blue-blind)

#5A4E63

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #643c96;
/* rgb */ color: rgb(100, 60, 150);
/* oklch */ color: oklch(44.9% 0.143 301.3);

Tailwind

colors: {
  custom: {
    50: '#9473b5',
    500: '#643c96',
    950: '#000000',
  },
}

SCSS

$custom: #643c96;
$custom-light: #9473b5;
$custom-dark: #000000;

JSON

{
  "hex": "#643c96",
  "rgb": {
    "r": 100,
    "g": 60,
    "b": 150
  },
  "hsl": {
    "h": 266.667,
    "s": 42.857,
    "l": 41.176
  },
  "oklch": {
    "l": 0.44905,
    "c": 0.14299,
    "h": 301.3
  },
  "luminance": 0.08143
}

Semantic roles & 50–950 ramp

primary

#643C96

secondary

#9AB678

accent

#D3559B

background

#F9F7FB

surface

#F2EDF6

border

#CCC8D0

text

#0D0811

muted

#7E7B80

Preview Lab

Preview with #643C96

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

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