#643A99#643A99

#643A99 is a dark, vivid violet. Relative luminance 0.080; OKLCH L 44.8% C 0.150 H 300.9°. Best body text is #FFFFFF at 8.06:1 contrast (WCAG AA passes).

Color values

HEX	#643A99
RGB	rgb(100, 58, 153)
HSL	hsl(267, 45%, 41%)
HSV	hsv(267, 62%, 60%)
CMYK	cmyk(34.6%, 62.1%, 0%, 40%)
CIE-LAB	lab(34.06, 38.62, -45.30)
CIE-LCH	lch(34.06, 59.53, 310.45°)
OKLab	oklab(44.81% 0.0769 -0.1285)
OKLCH	oklch(44.81% 0.15 300.9)
XYZ	xyz(12.5170, 8.0353, 31.0223)
Luminance	0.0804 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643A99 #6F993A

analogous

#3A4099 #643A99 #943A99

triadic

#643A99 #99643A #3A9964

tetradic

#643A99 #993A40 #6F993A #3A9994

square

#643A99 #993A40 #6F993A #3A9994

split-complementary

#643A99 #99943A #40993A

monochromatic

#2A1840 #47296D #643A99 #8253BE #A27FCE

Accessibility & contrast

On white

8.06

#643A99 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.61

#643A99 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643A99

8.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643A99	#FFFFFF	#000000	##FFFFFF
##643A99	1.00	8.06	2.61	8.06
#FFFFFF	8.06	1.00	21.00	1.00
#000000	2.61	21.00	1.00	21.00
##FFFFFF	8.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00509C

Deuteranopia (green-blind)

#1A5097

Tritanopia (blue-blind)

#594E64

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #643a99;
/* rgb */ color: rgb(100, 58, 153);
/* oklch */ color: oklch(44.8% 0.150 300.9);

Tailwind

colors: {
  custom: {
    50: '#9472b8',
    500: '#643a99',
    950: '#000000',
  },
}

SCSS

$custom: #643a99;
$custom-light: #9472b8;
$custom-dark: #000000;

JSON

{
  "hex": "#643a99",
  "rgb": {
    "r": 100,
    "g": 58,
    "b": 153
  },
  "hsl": {
    "h": 266.526,
    "s": 45.024,
    "l": 41.373
  },
  "oklch": {
    "l": 0.44808,
    "c": 0.14975,
    "h": 300.9
  },
  "luminance": 0.08035
}

Semantic roles & 50–950 ramp

primary

#643A99

secondary

#9BB877

accent

#D5539B

background

#F9F7FB

surface

#F2EDF6

border

#CCC8D0

text

#0D0811

muted

#7E7B80

Preview Lab

Preview with #643A99

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

Preview Lab → · Contrast checker → · Palette generator →