#643B72#643B72

#643B72 is a dark, moderate purple. Relative luminance 0.071; OKLCH L 42.5% C 0.100 H 317.1°. Best body text is #FFFFFF at 8.71:1 contrast (WCAG AA passes).

Color values

HEX	#643B72
RGB	rgb(100, 59, 114)
HSL	hsl(285, 32%, 34%)
HSV	hsv(285, 48%, 45%)
CMYK	cmyk(12.3%, 48.2%, 0%, 55.3%)
CIE-LAB	lab(31.93, 28.33, -24.55)
CIE-LCH	lch(31.93, 37.49, 319.09°)
OKLab	oklab(42.48% 0.073 -0.068)
OKLCH	oklch(42.48% 0.1 317.1)
XYZ	xyz(9.8563, 7.0525, 16.7584)
Luminance	0.0705 (WCAG relative)
Temperature	cool
Family	purple

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643B72 #49723B

analogous

#493B72 #643B72 #723B65

triadic

#643B72 #72643B #3B7264

tetradic

#643B72 #72493B #49723B #3B6572

square

#643B72 #72493B #49723B #3B6572

split-complementary

#643B72 #65723B #3B7249

monochromatic

#1D1121 #41264A #643B72 #87509A #A472B6

Accessibility & contrast

On white

8.71

#643B72 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.41

#643B72 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643B72

8.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643B72	#FFFFFF	#000000	##FFFFFF
##643B72	1.00	8.71	2.41	8.71
#FFFFFF	8.71	1.00	21.00	1.00
#000000	2.41	21.00	1.00	21.00
##FFFFFF	8.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#314874

Deuteranopia (green-blind)

#3D4C70

Tritanopia (blue-blind)

#644351

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #643b72;
/* rgb */ color: rgb(100, 59, 114);
/* oklch */ color: oklch(42.5% 0.100 317.1);

Tailwind

colors: {
  custom: {
    50: '#91729b',
    500: '#643b72',
    950: '#000000',
  },
}

SCSS

$custom: #643b72;
$custom-light: #91729b;
$custom-dark: #000000;

JSON

{
  "hex": "#643b72",
  "rgb": {
    "r": 100,
    "g": 59,
    "b": 114
  },
  "hsl": {
    "h": 284.727,
    "s": 31.792,
    "l": 33.922
  },
  "oklch": {
    "l": 0.4248,
    "c": 0.09975,
    "h": 317.1
  },
  "luminance": 0.07052
}

Semantic roles & 50–950 ramp

primary

#643B72

secondary

#77A069

accent

#C8607A

background

#F9F7F9

surface

#F1EDF2

border

#CBC8CC

text

#0D080E

muted

#7E7B7E

Preview Lab

Preview with #643B72

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

Preview Lab → · Contrast checker → · Palette generator →