#643A76#643A76

#643A76 is a dark, moderate purple. Relative luminance 0.070; OKLCH L 42.5% C 0.106 H 315.0°. Best body text is #FFFFFF at 8.72:1 contrast (WCAG AA passes).

Color values

HEX	#643A76
RGB	rgb(100, 58, 118)
HSL	hsl(282, 34%, 35%)
HSV	hsv(282, 51%, 46%)
CMYK	cmyk(15.3%, 50.8%, 0%, 53.7%)
CIE-LAB	lab(31.91, 29.85, -27.10)
CIE-LCH	lch(31.91, 40.32, 317.76°)
OKLab	oklab(42.53% 0.0752 -0.0753)
OKLCH	oklch(42.53% 0.106 315)
XYZ	xyz(10.0381, 7.0437, 17.9668)
Luminance	0.0704 (WCAG relative)
Temperature	cool
Family	purple

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643A76 #4C763A

analogous

#463A76 #643A76 #763A6A

triadic

#643A76 #76643A #3A7664

tetradic

#643A76 #76463A #4C763A #3A6A76

square

#643A76 #76463A #4C763A #3A6A76

split-complementary

#643A76 #6A763A #3A7646

monochromatic

#1E1224 #41264D #643A76 #874E9F #A471B9

Accessibility & contrast

On white

8.72

#643A76 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.41

#643A76 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643A76

8.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643A76	#FFFFFF	#000000	##FFFFFF
##643A76	1.00	8.72	2.41	8.72
#FFFFFF	8.72	1.00	21.00	1.00
#000000	2.41	21.00	1.00	21.00
##FFFFFF	8.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E4978

Deuteranopia (green-blind)

#3A4C74

Tritanopia (blue-blind)

#634352

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #643a76;
/* rgb */ color: rgb(100, 58, 118);
/* oklch */ color: oklch(42.5% 0.106 315.0);

Tailwind

colors: {
  custom: {
    50: '#92719e',
    500: '#643a76',
    950: '#000000',
  },
}

SCSS

$custom: #643a76;
$custom-light: #92719e;
$custom-dark: #000000;

JSON

{
  "hex": "#643a76",
  "rgb": {
    "r": 100,
    "g": 58,
    "b": 118
  },
  "hsl": {
    "h": 282,
    "s": 34.091,
    "l": 34.51
  },
  "oklch": {
    "l": 0.42534,
    "c": 0.10646,
    "h": 315
  },
  "luminance": 0.07043
}

Semantic roles & 50–950 ramp

primary

#643A76

secondary

#7AA369

accent

#CA5E7E

background

#F9F6F9

surface

#F1ECF2

border

#CBC7CC

text

#0D080E

muted

#7E7B7E

Preview Lab

Preview with #643A76

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

Preview Lab → · Contrast checker → · Palette generator →