#643B73#643B73

#643B73 is a dark, moderate purple. Relative luminance 0.071; OKLCH L 42.5% C 0.101 H 316.5°. Best body text is #FFFFFF at 8.70:1 contrast (WCAG AA passes).

Color values

HEX	#643B73
RGB	rgb(100, 59, 115)
HSL	hsl(284, 32%, 34%)
HSV	hsv(284, 49%, 45%)
CMYK	cmyk(13%, 48.7%, 0%, 54.9%)
CIE-LAB	lab(31.98, 28.56, -25.10)
CIE-LCH	lch(31.98, 38.02, 318.69°)
OKLab	oklab(42.54% 0.0732 -0.0695)
OKLCH	oklch(42.54% 0.101 316.5)
XYZ	xyz(9.9135, 7.0754, 17.0598)
Luminance	0.0707 (WCAG relative)
Temperature	cool
Family	purple

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643B73 #4A733B

analogous

#483B73 #643B73 #733B66

triadic

#643B73 #73643B #3B7364

tetradic

#643B73 #73483B #4A733B #3B6673

square

#643B73 #73483B #4A733B #3B6673

split-complementary

#643B73 #66733B #3B7348

monochromatic

#1E1122 #41264B #643B73 #87509B #A472B7

Accessibility & contrast

On white

8.70

#643B73 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.41

#643B73 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643B73

8.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643B73	#FFFFFF	#000000	##FFFFFF
##643B73	1.00	8.70	2.41	8.70
#FFFFFF	8.70	1.00	21.00	1.00
#000000	2.41	21.00	1.00	21.00
##FFFFFF	8.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#314975

Deuteranopia (green-blind)

#3C4C71

Tritanopia (blue-blind)

#634351

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #643b73;
/* rgb */ color: rgb(100, 59, 115);
/* oklch */ color: oklch(42.5% 0.101 316.5);

Tailwind

colors: {
  custom: {
    50: '#91729b',
    500: '#643b73',
    950: '#000000',
  },
}

SCSS

$custom: #643b73;
$custom-light: #91729b;
$custom-dark: #000000;

JSON

{
  "hex": "#643b73",
  "rgb": {
    "r": 100,
    "g": 59,
    "b": 115
  },
  "hsl": {
    "h": 283.929,
    "s": 32.184,
    "l": 34.118
  },
  "oklch": {
    "l": 0.42535,
    "c": 0.10097,
    "h": 316.5
  },
  "luminance": 0.07075
}

Semantic roles & 50–950 ramp

primary

#643B73

secondary

#78A069

accent

#C85F7C

background

#F9F7F9

surface

#F1EDF2

border

#CBC8CC

text

#0D080E

muted

#7E7B7E

Preview Lab

Preview with #643B73

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

Preview Lab → · Contrast checker → · Palette generator →