#643E5E#643E5E

#643E5E is a dark, moderate purple. Relative luminance 0.070; OKLCH L 42.0% C 0.071 H 332.6°. Best body text is #FFFFFF at 8.78:1 contrast (WCAG AA passes).

Color values

HEX	#643E5E
RGB	rgb(100, 62, 94)
HSL	hsl(309, 23%, 32%)
HSV	hsv(309, 38%, 39%)
CMYK	cmyk(0%, 38%, 6%, 60.8%)
CIE-LAB	lab(31.72, 22.18, -12.14)
CIE-LCH	lch(31.72, 25.29, 331.31°)
OKLab	oklab(42.02% 0.0631 -0.0327)
OKLCH	oklch(42.02% 0.071 332.6)
XYZ	xyz(8.9984, 6.9631, 11.4575)
Luminance	0.0696 (WCAG relative)
Temperature	neutral
Family	purple

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643E5E #3E6444

analogous

#573E64 #643E5E #643E4B

triadic

#643E5E #5E643E #3E5E64

tetradic

#643E5E #64573E #3E6444 #3E4B64

square

#643E5E #64573E #3E6444 #3E4B64

split-complementary

#643E5E #4B643E #3E6457

monochromatic

#180F17 #3E273A #643E5E #8A5582 #A974A0

Accessibility & contrast

On white

8.78

#643E5E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.39

#643E5E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643E5E

8.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643E5E	#FFFFFF	#000000	##FFFFFF
##643E5E	1.00	8.78	2.39	8.78
#FFFFFF	8.78	1.00	21.00	1.00
#000000	2.39	21.00	1.00	21.00
##FFFFFF	8.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D475F

Deuteranopia (green-blind)

#474D5D

Tritanopia (blue-blind)

#67404A

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #643e5e;
/* rgb */ color: rgb(100, 62, 94);
/* oklch */ color: oklch(42.0% 0.071 332.6);

Tailwind

colors: {
  custom: {
    50: '#91748b',
    500: '#643e5e',
    950: '#000000',
  },
}

SCSS

$custom: #643e5e;
$custom-light: #91748b;
$custom-dark: #000000;

JSON

{
  "hex": "#643e5e",
  "rgb": {
    "r": 100,
    "g": 62,
    "b": 94
  },
  "hsl": {
    "h": 309.474,
    "s": 23.457,
    "l": 31.765
  },
  "oklch": {
    "l": 0.42023,
    "c": 0.07106,
    "h": 332.6
  },
  "luminance": 0.06963
}

Semantic roles & 50–950 ramp

primary

#643E5E

secondary

#6A9471

accent

#C07668

background

#F8F7F8

surface

#F0EDF0

border

#CBC8CB

text

#0D080C

muted

#7D7B7D

Preview Lab

Preview with #643E5E

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

Preview Lab → · Contrast checker → · Palette generator →