#643399#643399

#643399 is a dark, vivid violet. Relative luminance 0.074; OKLCH L 43.8% C 0.160 H 302.3°. Best body text is #FFFFFF at 8.48:1 contrast (WCAG AA passes).

Color values

HEX	#643399
RGB	rgb(100, 51, 153)
HSL	hsl(269, 50%, 40%)
HSV	hsv(269, 67%, 60%)
CMYK	cmyk(34.6%, 66.7%, 0%, 40%)
CIE-LAB	lab(32.65, 42.44, -47.57)
CIE-LCH	lch(32.65, 63.75, 311.74°)
OKLab	oklab(43.79% 0.0854 -0.1352)
OKLCH	oklch(43.79% 0.16 302.3)
XYZ	xyz(12.1878, 7.3769, 30.9126)
Luminance	0.0738 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643399 #689933

analogous

#333599 #643399 #973399

triadic

#643399 #996433 #339964

tetradic

#643399 #993335 #689933 #339997

square

#643399 #993335 #689933 #339997

split-complementary

#643399 #999733 #359933

monochromatic

#28143D #46246B #643399 #8247C2 #A175D1

Accessibility & contrast

On white

8.48

#643399 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.48

#643399 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643399

8.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643399	#FFFFFF	#000000	##FFFFFF
##643399	1.00	8.48	2.48	8.48
#FFFFFF	8.48	1.00	21.00	1.00
#000000	2.48	21.00	1.00	21.00
##FFFFFF	8.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004C9C

Deuteranopia (green-blind)

#094C97

Tritanopia (blue-blind)

#594A61

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #643399;
/* rgb */ color: rgb(100, 51, 153);
/* oklch */ color: oklch(43.8% 0.160 302.3);

Tailwind

colors: {
  custom: {
    50: '#946eb8',
    500: '#643399',
    950: '#000000',
  },
}

SCSS

$custom: #643399;
$custom-light: #946eb8;
$custom-dark: #000000;

JSON

{
  "hex": "#643399",
  "rgb": {
    "r": 100,
    "g": 51,
    "b": 153
  },
  "hsl": {
    "h": 268.824,
    "s": 50,
    "l": 40
  },
  "oklch": {
    "l": 0.4379,
    "c": 0.15986,
    "h": 302.3
  },
  "luminance": 0.07377
}

Semantic roles & 50–950 ramp

primary

#643399

secondary

#95B96E

accent

#DA4E97

background

#F9F6FB

surface

#F2ECF6

border

#CCC7D0

text

#0E0711

muted

#7E7A80

Preview Lab

Preview with #643399

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

Preview Lab → · Contrast checker → · Palette generator →