#643B5E#643B5E

#643B5E is a dark, moderate purple. Relative luminance 0.066; OKLCH L 41.5% C 0.077 H 332.3°. Best body text is #FFFFFF at 9.02:1 contrast (WCAG AA passes).

Color values

HEX	#643B5E
RGB	rgb(100, 59, 94)
HSL	hsl(309, 26%, 31%)
HSV	hsv(309, 41%, 39%)
CMYK	cmyk(0%, 41%, 6%, 60.8%)
CIE-LAB	lab(30.99, 24.01, -13.27)
CIE-LCH	lch(30.99, 27.43, 331.08°)
OKLab	oklab(41.47% 0.0683 -0.0358)
OKLCH	oklch(41.47% 0.077 332.3)
XYZ	xyz(8.8398, 6.6458, 11.4047)
Luminance	0.0664 (WCAG relative)
Temperature	neutral
Family	purple

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643B5E #3B6441

analogous

#553B64 #643B5E #643B49

triadic

#643B5E #5E643B #3B5E64

tetradic

#643B5E #64553B #3B6441 #3B4964

square

#643B5E #64553B #3B6441 #3B4964

split-complementary

#643B5E #49643B #3B6455

monochromatic

#170E16 #3E243A #643B5E #8A5282 #AA6FA2

Accessibility & contrast

On white

9.02

#643B5E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.33

#643B5E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643B5E

9.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643B5E	#FFFFFF	#000000	##FFFFFF
##643B5E	1.00	9.02	2.33	9.02
#FFFFFF	9.02	1.00	21.00	1.00
#000000	2.33	21.00	1.00	21.00
##FFFFFF	9.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A455F

Deuteranopia (green-blind)

#454B5D

Tritanopia (blue-blind)

#673D48

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #643b5e;
/* rgb */ color: rgb(100, 59, 94);
/* oklch */ color: oklch(41.5% 0.077 332.3);

Tailwind

colors: {
  custom: {
    50: '#91728b',
    500: '#643b5e',
    950: '#000000',
  },
}

SCSS

$custom: #643b5e;
$custom-light: #91728b;
$custom-dark: #000000;

JSON

{
  "hex": "#643b5e",
  "rgb": {
    "r": 100,
    "g": 59,
    "b": 94
  },
  "hsl": {
    "h": 308.78,
    "s": 25.786,
    "l": 31.176
  },
  "oklch": {
    "l": 0.41467,
    "c": 0.07711,
    "h": 332.3
  },
  "luminance": 0.06645
}

Semantic roles & 50–950 ramp

primary

#643B5E

secondary

#67946D

accent

#C27366

background

#F9F6F8

surface

#F1ECF0

border

#CBC7CB

text

#0D080C

muted

#7E7B7D

Preview Lab

Preview with #643B5E

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

Preview Lab → · Contrast checker → · Palette generator →