#643B6D#643B6D

#643B6D is a dark, moderate purple. Relative luminance 0.069; OKLCH L 42.2% C 0.094 H 320.2°. Best body text is #FFFFFF at 8.79:1 contrast (WCAG AA passes).

Color values

HEX	#643B6D
RGB	rgb(100, 59, 109)
HSL	hsl(289, 30%, 33%)
HSV	hsv(289, 46%, 43%)
CMYK	cmyk(8.3%, 45.9%, 0%, 57.3%)
CIE-LAB	lab(31.67, 27.20, -21.78)
CIE-LCH	lch(31.67, 34.84, 321.31°)
OKLab	oklab(42.21% 0.0721 -0.06)
OKLCH	oklch(42.21% 0.094 320.2)
XYZ	xyz(9.5795, 6.9417, 15.3003)
Luminance	0.0694 (WCAG relative)
Temperature	cool
Family	purple

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643B6D #446D3B

analogous

#4B3B6D #643B6D #6D3B5D

triadic

#643B6D #6D643B #3B6D64

tetradic

#643B6D #6D4B3B #446D3B #3B5D6D

square

#643B6D #6D4B3B #446D3B #3B5D6D

split-complementary

#643B6D #5D6D3B #3B6D4B

monochromatic

#1B101E #402645 #643B6D #885095 #A671B2

Accessibility & contrast

On white

8.79

#643B6D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.39

#643B6D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643B6D

8.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643B6D	#FFFFFF	#000000	##FFFFFF
##643B6D	1.00	8.79	2.39	8.79
#FFFFFF	8.79	1.00	21.00	1.00
#000000	2.39	21.00	1.00	21.00
##FFFFFF	8.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#34486F

Deuteranopia (green-blind)

#3F4C6C

Tritanopia (blue-blind)

#65414F

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #643b6d;
/* rgb */ color: rgb(100, 59, 109);
/* oklch */ color: oklch(42.2% 0.094 320.2);

Tailwind

colors: {
  custom: {
    50: '#917297',
    500: '#643b6d',
    950: '#000000',
  },
}

SCSS

$custom: #643b6d;
$custom-light: #917297;
$custom-dark: #000000;

JSON

{
  "hex": "#643b6d",
  "rgb": {
    "r": 100,
    "g": 59,
    "b": 109
  },
  "hsl": {
    "h": 289.2,
    "s": 29.762,
    "l": 32.941
  },
  "oklch": {
    "l": 0.42209,
    "c": 0.09377,
    "h": 320.2
  },
  "luminance": 0.06941
}

Semantic roles & 50–950 ramp

primary

#643B6D

secondary

#719C68

accent

#C66274

background

#F9F6F9

surface

#F1ECF2

border

#CBC7CC

text

#0D080D

muted

#7E7B7E

Preview Lab

Preview with #643B6D

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

Preview Lab → · Contrast checker → · Palette generator →