#643C97#643C97

#643C97 is a dark, vivid violet. Relative luminance 0.082; OKLCH L 45.0% C 0.144 H 301.0°. Best body text is #FFFFFF at 7.97:1 contrast (WCAG AA passes).

Color values

HEX	#643C97
RGB	rgb(100, 60, 151)
HSL	hsl(266, 43%, 41%)
HSV	hsv(266, 60%, 59%)
CMYK	cmyk(33.8%, 60.3%, 0%, 40.8%)
CIE-LAB	lab(34.35, 36.96, -43.62)
CIE-LCH	lch(34.35, 57.18, 310.28°)
OKLab	oklab(44.98% 0.0744 -0.1236)
OKLCH	oklch(44.98% 0.144 301)
XYZ	xyz(12.4560, 8.1753, 30.1939)
Luminance	0.0818 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643C97 #6F973C

analogous

#3C4297 #643C97 #923C97

triadic

#643C97 #97643C #3C9764

tetradic

#643C97 #973C42 #6F973C #3C9792

square

#643C97 #973C42 #6F973C #3C9792

split-complementary

#643C97 #97923C #42973C

monochromatic

#2A193F #472B6B #643C97 #8255BB #A281CD

Accessibility & contrast

On white

7.97

#643C97 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.64

#643C97 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643C97

7.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643C97	#FFFFFF	#000000	##FFFFFF
##643C97	1.00	7.97	2.64	7.97
#FFFFFF	7.97	1.00	21.00	1.00
#000000	2.64	21.00	1.00	21.00
##FFFFFF	7.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0C509A

Deuteranopia (green-blind)

#215095

Tritanopia (blue-blind)

#5A4F63

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #643c97;
/* rgb */ color: rgb(100, 60, 151);
/* oklch */ color: oklch(45.0% 0.144 301.0);

Tailwind

colors: {
  custom: {
    50: '#9473b6',
    500: '#643c97',
    950: '#000000',
  },
}

SCSS

$custom: #643c97;
$custom-light: #9473b6;
$custom-dark: #000000;

JSON

{
  "hex": "#643c97",
  "rgb": {
    "r": 100,
    "g": 60,
    "b": 151
  },
  "hsl": {
    "h": 266.374,
    "s": 43.128,
    "l": 41.373
  },
  "oklch": {
    "l": 0.44975,
    "c": 0.14425,
    "h": 301
  },
  "luminance": 0.08175
}

Semantic roles & 50–950 ramp

primary

#643C97

secondary

#9BB778

accent

#D3559C

background

#F9F7FB

surface

#F2EDF6

border

#CCC8D0

text

#0D0811

muted

#7E7B80

Preview Lab

Preview with #643C97

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

Preview Lab → · Contrast checker → · Palette generator →