#643C9B#643C9B

#643C9B is a mid, vivid violet. Relative luminance 0.083; OKLCH L 45.3% C 0.149 H 299.8°. Best body text is #FFFFFF at 7.89:1 contrast (WCAG AA passes).

Color values

HEX	#643C9B
RGB	rgb(100, 60, 155)
HSL	hsl(265, 44%, 42%)
HSV	hsv(265, 61%, 61%)
CMYK	cmyk(35.5%, 61.3%, 0%, 39.2%)
CIE-LAB	lab(34.62, 38.03, -45.61)
CIE-LCH	lch(34.62, 59.38, 309.82°)
OKLab	oklab(45.26% 0.0743 -0.1294)
OKLCH	oklch(45.26% 0.149 299.8)
XYZ	xyz(12.7863, 8.3075, 31.9339)
Luminance	0.0831 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643C9B #739B3C

analogous

#3C449B #643C9B #943C9B

triadic

#643C9B #9B643C #3C9B64

tetradic

#643C9B #9B3C44 #739B3C #3C9B94

square

#643C9B #9B3C44 #739B3C #3C9B94

split-complementary

#643C9B #9B943C #449B3C

monochromatic

#2B1A43 #482B6F #643C9B #8256BE #A383CF

Accessibility & contrast

On white

7.89

#643C9B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.66

#643C9B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643C9B

7.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643C9B	#FFFFFF	#000000	##FFFFFF
##643C9B	1.00	7.89	2.66	7.89
#FFFFFF	7.89	1.00	21.00	1.00
#000000	2.66	21.00	1.00	21.00
##FFFFFF	7.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00519E

Deuteranopia (green-blind)

#1B5199

Tritanopia (blue-blind)

#585065

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #643c9b;
/* rgb */ color: rgb(100, 60, 155);
/* oklch */ color: oklch(45.3% 0.149 299.8);

Tailwind

colors: {
  custom: {
    50: '#9474b9',
    500: '#643c9b',
    950: '#000000',
  },
}

SCSS

$custom: #643c9b;
$custom-light: #9474b9;
$custom-dark: #000000;

JSON

{
  "hex": "#643c9b",
  "rgb": {
    "r": 100,
    "g": 60,
    "b": 155
  },
  "hsl": {
    "h": 265.263,
    "s": 44.186,
    "l": 42.157
  },
  "oklch": {
    "l": 0.45258,
    "c": 0.14924,
    "h": 299.8
  },
  "luminance": 0.08308
}

Semantic roles & 50–950 ramp

primary

#643C9B

secondary

#9EB97A

accent

#D4549E

background

#F9F7FB

surface

#F2EDF6

border

#CCC8D0

text

#0D0811

muted

#7E7B80

Preview Lab

Preview with #643C9B

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

Preview Lab → · Contrast checker → · Palette generator →