#643A98#643A98

#643A98 is a dark, vivid violet. Relative luminance 0.080; OKLCH L 44.7% C 0.149 H 301.2°. Best body text is #FFFFFF at 8.08:1 contrast (WCAG AA passes).

Color values

HEX	#643A98
RGB	rgb(100, 58, 152)
HSL	hsl(267, 45%, 41%)
HSV	hsv(267, 62%, 60%)
CMYK	cmyk(34.2%, 61.8%, 0%, 40.4%)
CIE-LAB	lab(33.99, 38.36, -44.80)
CIE-LCH	lch(33.99, 58.98, 310.57°)
OKLab	oklab(44.74% 0.0769 -0.1271)
OKLCH	oklch(44.74% 0.149 301.2)
XYZ	xyz(12.4347, 8.0024, 30.5892)
Luminance	0.0800 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643A98 #6E983A

analogous

#3A3F98 #643A98 #933A98

triadic

#643A98 #98643A #3A9864

tetradic

#643A98 #983A3F #6E983A #3A9893

square

#643A98 #983A3F #6E983A #3A9893

split-complementary

#643A98 #98933A #3F983A

monochromatic

#2A183F #47296C #643A98 #8252BD #A27ECE

Accessibility & contrast

On white

8.08

#643A98 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.60

#643A98 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643A98

8.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643A98	#FFFFFF	#000000	##FFFFFF
##643A98	1.00	8.08	2.60	8.08
#FFFFFF	8.08	1.00	21.00	1.00
#000000	2.60	21.00	1.00	21.00
##FFFFFF	8.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004F9B

Deuteranopia (green-blind)

#1C4F96

Tritanopia (blue-blind)

#594E63

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #643a98;
/* rgb */ color: rgb(100, 58, 152);
/* oklch */ color: oklch(44.7% 0.149 301.2);

Tailwind

colors: {
  custom: {
    50: '#9472b7',
    500: '#643a98',
    950: '#000000',
  },
}

SCSS

$custom: #643a98;
$custom-light: #9472b7;
$custom-dark: #000000;

JSON

{
  "hex": "#643a98",
  "rgb": {
    "r": 100,
    "g": 58,
    "b": 152
  },
  "hsl": {
    "h": 266.809,
    "s": 44.762,
    "l": 41.176
  },
  "oklch": {
    "l": 0.44736,
    "c": 0.14852,
    "h": 301.2
  },
  "luminance": 0.08002
}

Semantic roles & 50–950 ramp

primary

#643A98

secondary

#9AB876

accent

#D4539B

background

#F9F7FB

surface

#F2EDF6

border

#CCC8D0

text

#0D0811

muted

#7E7B80

Preview Lab

Preview with #643A98

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

Preview Lab → · Contrast checker → · Palette generator →