#643B97#643B97

#643B97 is a dark, vivid violet. Relative luminance 0.081; OKLCH L 44.8% C 0.146 H 301.3°. Best body text is #FFFFFF at 8.03:1 contrast (WCAG AA passes).

Color values

HEX	#643B97
RGB	rgb(100, 59, 151)
HSL	hsl(267, 44%, 41%)
HSV	hsv(267, 61%, 59%)
CMYK	cmyk(33.8%, 60.9%, 0%, 40.8%)
CIE-LAB	lab(34.13, 37.53, -43.96)
CIE-LCH	lch(34.13, 57.81, 310.49°)
OKLab	oklab(44.82% 0.0757 -0.1246)
OKLCH	oklch(44.82% 0.146 301.3)
XYZ	xyz(12.4041, 8.0716, 30.1766)
Luminance	0.0807 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643B97 #6E973B

analogous

#3B4097 #643B97 #923B97

triadic

#643B97 #97643B #3B9764

tetradic

#643B97 #973B40 #6E973B #3B9792

square

#643B97 #973B40 #6E973B #3B9792

split-complementary

#643B97 #97923B #40973B

monochromatic

#2A193F #472A6B #643B97 #8253BC #A27FCD

Accessibility & contrast

On white

8.03

#643B97 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.61

#643B97 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643B97

8.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643B97	#FFFFFF	#000000	##FFFFFF
##643B97	1.00	8.03	2.61	8.03
#FFFFFF	8.03	1.00	21.00	1.00
#000000	2.61	21.00	1.00	21.00
##FFFFFF	8.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#07509A

Deuteranopia (green-blind)

#1F5095

Tritanopia (blue-blind)

#5A4E63

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #643b97;
/* rgb */ color: rgb(100, 59, 151);
/* oklch */ color: oklch(44.8% 0.146 301.3);

Tailwind

colors: {
  custom: {
    50: '#9473b6',
    500: '#643b97',
    950: '#000000',
  },
}

SCSS

$custom: #643b97;
$custom-light: #9473b6;
$custom-dark: #000000;

JSON

{
  "hex": "#643b97",
  "rgb": {
    "r": 100,
    "g": 59,
    "b": 151
  },
  "hsl": {
    "h": 266.739,
    "s": 43.81,
    "l": 41.176
  },
  "oklch": {
    "l": 0.44819,
    "c": 0.14577,
    "h": 301.3
  },
  "luminance": 0.08072
}

Semantic roles & 50–950 ramp

primary

#643B97

secondary

#9AB777

accent

#D4549B

background

#F9F7FB

surface

#F2EDF6

border

#CCC8D0

text

#0D0811

muted

#7E7B80

Preview Lab

Preview with #643B97

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

Preview Lab → · Contrast checker → · Palette generator →