#643C5E#643C5E

#643C5E is a dark, moderate purple. Relative luminance 0.067; OKLCH L 41.7% C 0.075 H 332.4°. Best body text is #FFFFFF at 8.94:1 contrast (WCAG AA passes).

Color values

HEX	#643C5E
RGB	rgb(100, 60, 94)
HSL	hsl(309, 25%, 31%)
HSV	hsv(309, 40%, 39%)
CMYK	cmyk(0%, 40%, 6%, 60.8%)
CIE-LAB	lab(31.23, 23.40, -12.89)
CIE-LCH	lch(31.23, 26.72, 331.15°)
OKLab	oklab(41.65% 0.0666 -0.0348)
OKLCH	oklch(41.65% 0.075 332.4)
XYZ	xyz(8.8917, 6.7496, 11.4220)
Luminance	0.0675 (WCAG relative)
Temperature	neutral
Family	purple

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643C5E #3C6442

analogous

#563C64 #643C5E #643C4A

triadic

#643C5E #5E643C #3C5E64

tetradic

#643C5E #64563C #3C6442 #3C4A64

square

#643C5E #64563C #3C6442 #3C4A64

split-complementary

#643C5E #4A643C #3C6456

monochromatic

#180E16 #3E253A #643C5E #8A5382 #AA71A1

Accessibility & contrast

On white

8.94

#643C5E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.35

#643C5E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643C5E

8.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643C5E	#FFFFFF	#000000	##FFFFFF
##643C5E	1.00	8.94	2.35	8.94
#FFFFFF	8.94	1.00	21.00	1.00
#000000	2.35	21.00	1.00	21.00
##FFFFFF	8.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B465F

Deuteranopia (green-blind)

#454C5D

Tritanopia (blue-blind)

#673E49

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #643c5e;
/* rgb */ color: rgb(100, 60, 94);
/* oklch */ color: oklch(41.7% 0.075 332.4);

Tailwind

colors: {
  custom: {
    50: '#91728b',
    500: '#643c5e',
    950: '#000000',
  },
}

SCSS

$custom: #643c5e;
$custom-light: #91728b;
$custom-dark: #000000;

JSON

{
  "hex": "#643c5e",
  "rgb": {
    "r": 100,
    "g": 60,
    "b": 94
  },
  "hsl": {
    "h": 309,
    "s": 25,
    "l": 31.373
  },
  "oklch": {
    "l": 0.41651,
    "c": 0.07509,
    "h": 332.4
  },
  "luminance": 0.06749
}

Semantic roles & 50–950 ramp

primary

#643C5E

secondary

#68946E

accent

#C17466

background

#F9F7F8

surface

#F1EDF0

border

#CBC8CB

text

#0D080C

muted

#7E7B7D

Preview Lab

Preview with #643C5E

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

Preview Lab → · Contrast checker → · Palette generator →