#643C8F#643C8F

#643C8F is a dark, vivid violet. Relative luminance 0.079; OKLCH L 44.4% C 0.134 H 303.6°. Best body text is #FFFFFF at 8.12:1 contrast (WCAG AA passes).

Color values

HEX	#643C8F
RGB	rgb(100, 60, 143)
HSL	hsl(269, 41%, 40%)
HSV	hsv(269, 58%, 56%)
CMYK	cmyk(30.1%, 58%, 0%, 43.9%)
CIE-LAB	lab(33.82, 34.87, -39.57)
CIE-LCH	lch(33.82, 52.74, 311.39°)
OKLab	oklab(44.43% 0.0744 -0.1117)
OKLCH	oklch(44.43% 0.134 303.6)
XYZ	xyz(11.8282, 7.9242, 26.8877)
Luminance	0.0792 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643C8F #678F3C

analogous

#3C3D8F #643C8F #8E3C8F

triadic

#643C8F #8F643C #3C8F64

tetradic

#643C8F #8F3C3D #678F3C #3C8F8E

square

#643C8F #8F3C3D #678F3C #3C8F8E

split-complementary

#643C8F #8F8E3C #3D8F3C

monochromatic

#281839 #462A64 #643C8F #8252B6 #A17DC8

Accessibility & contrast

On white

8.12

#643C8F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.58

#643C8F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643C8F

8.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643C8F	#FFFFFF	#000000	##FFFFFF
##643C8F	1.00	8.12	2.58	8.12
#FFFFFF	8.12	1.00	21.00	1.00
#000000	2.58	21.00	1.00	21.00
##FFFFFF	8.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B4F92

Deuteranopia (green-blind)

#2A4F8D

Tritanopia (blue-blind)

#5C4C5F

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #643c8f;
/* rgb */ color: rgb(100, 60, 143);
/* oklch */ color: oklch(44.4% 0.134 303.6);

Tailwind

colors: {
  custom: {
    50: '#9373b0',
    500: '#643c8f',
    950: '#000000',
  },
}

SCSS

$custom: #643c8f;
$custom-light: #9373b0;
$custom-dark: #000000;

JSON

{
  "hex": "#643c8f",
  "rgb": {
    "r": 100,
    "g": 60,
    "b": 143
  },
  "hsl": {
    "h": 268.916,
    "s": 40.887,
    "l": 39.804
  },
  "oklch": {
    "l": 0.44427,
    "c": 0.1342,
    "h": 303.6
  },
  "luminance": 0.07924
}

Semantic roles & 50–950 ramp

primary

#643C8F

secondary

#95B275

accent

#D15796

background

#F9F7FA

surface

#F2EDF5

border

#CCC8CF

text

#0D0810

muted

#7E7B7F

Preview Lab

Preview with #643C8F

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

Preview Lab → · Contrast checker → · Palette generator →