#643C9A#643C9A

#643C9A is a mid, vivid violet. Relative luminance 0.083; OKLCH L 45.2% C 0.148 H 300.1°. Best body text is #FFFFFF at 7.91:1 contrast (WCAG AA passes).

Color values

HEX	#643C9A
RGB	rgb(100, 60, 154)
HSL	hsl(266, 44%, 42%)
HSV	hsv(266, 61%, 60%)
CMYK	cmyk(35.1%, 61%, 0%, 39.6%)
CIE-LAB	lab(34.55, 37.76, -45.12)
CIE-LCH	lch(34.55, 58.83, 309.93°)
OKLab	oklab(45.19% 0.0743 -0.128)
OKLCH	oklch(45.19% 0.148 300.1)
XYZ	xyz(12.7027, 8.2740, 31.4934)
Luminance	0.0827 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643C9A #729A3C

analogous

#3C439A #643C9A #933C9A

triadic

#643C9A #9A643C #3C9A64

tetradic

#643C9A #9A3C43 #729A3C #3C9A93

square

#643C9A #9A3C43 #729A3C #3C9A93

split-complementary

#643C9A #9A933C #439A3C

monochromatic

#2B1A42 #472B6E #643C9A #8256BD #A382CE

Accessibility & contrast

On white

7.91

#643C9A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.65

#643C9A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643C9A

7.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643C9A	#FFFFFF	#000000	##FFFFFF
##643C9A	1.00	7.91	2.65	7.91
#FFFFFF	7.91	1.00	21.00	1.00
#000000	2.65	21.00	1.00	21.00
##FFFFFF	7.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#03519D

Deuteranopia (green-blind)

#1D5198

Tritanopia (blue-blind)

#595065

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #643c9a;
/* rgb */ color: rgb(100, 60, 154);
/* oklch */ color: oklch(45.2% 0.148 300.1);

Tailwind

colors: {
  custom: {
    50: '#9474b8',
    500: '#643c9a',
    950: '#000000',
  },
}

SCSS

$custom: #643c9a;
$custom-light: #9474b8;
$custom-dark: #000000;

JSON

{
  "hex": "#643c9a",
  "rgb": {
    "r": 100,
    "g": 60,
    "b": 154
  },
  "hsl": {
    "h": 265.532,
    "s": 43.925,
    "l": 41.961
  },
  "oklch": {
    "l": 0.45187,
    "c": 0.148,
    "h": 300.1
  },
  "luminance": 0.08274
}

Semantic roles & 50–950 ramp

primary

#643C9A

secondary

#9EB87A

accent

#D4549D

background

#F9F7FB

surface

#F2EDF6

border

#CCC8D0

text

#0D0811

muted

#7E7B80

Preview Lab

Preview with #643C9A

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

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