#643C99#643C99

#643C99 is a mid, vivid violet. Relative luminance 0.082; OKLCH L 45.1% C 0.147 H 300.4°. Best body text is #FFFFFF at 7.93:1 contrast (WCAG AA passes).

Color values

HEX	#643C99
RGB	rgb(100, 60, 153)
HSL	hsl(266, 44%, 42%)
HSV	hsv(266, 61%, 60%)
CMYK	cmyk(34.6%, 60.8%, 0%, 40%)
CIE-LAB	lab(34.48, 37.49, -44.62)
CIE-LCH	lch(34.48, 58.28, 310.04°)
OKLab	oklab(45.12% 0.0743 -0.1265)
OKLCH	oklch(45.12% 0.147 300.4)
XYZ	xyz(12.6198, 8.2409, 31.0566)
Luminance	0.0824 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643C99 #71993C

analogous

#3C4399 #643C99 #933C99

triadic

#643C99 #99643C #3C9964

tetradic

#643C99 #993C43 #71993C #3C9993

square

#643C99 #993C43 #71993C #3C9993

split-complementary

#643C99 #99933C #43993C

monochromatic

#2B1A41 #472B6D #643C99 #8256BD #A282CE

Accessibility & contrast

On white

7.93

#643C99 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.65

#643C99 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643C99

7.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643C99	#FFFFFF	#000000	##FFFFFF
##643C99	1.00	7.93	2.65	7.93
#FFFFFF	7.93	1.00	21.00	1.00
#000000	2.65	21.00	1.00	21.00
##FFFFFF	7.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#06519C

Deuteranopia (green-blind)

#1E5097

Tritanopia (blue-blind)

#594F64

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #643c99;
/* rgb */ color: rgb(100, 60, 153);
/* oklch */ color: oklch(45.1% 0.147 300.4);

Tailwind

colors: {
  custom: {
    50: '#9474b8',
    500: '#643c99',
    950: '#000000',
  },
}

SCSS

$custom: #643c99;
$custom-light: #9474b8;
$custom-dark: #000000;

JSON

{
  "hex": "#643c99",
  "rgb": {
    "r": 100,
    "g": 60,
    "b": 153
  },
  "hsl": {
    "h": 265.806,
    "s": 43.662,
    "l": 41.765
  },
  "oklch": {
    "l": 0.45116,
    "c": 0.14675,
    "h": 300.4
  },
  "luminance": 0.08241
}

Semantic roles & 50–950 ramp

primary

#643C99

secondary

#9DB879

accent

#D3549D

background

#F9F7FB

surface

#F2EDF6

border

#CCC8D0

text

#0D0811

muted

#7E7B80

Preview Lab

Preview with #643C99

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

Preview Lab → · Contrast checker → · Palette generator →