#643D71#643D71

#643D71 is a dark, moderate purple. Relative luminance 0.072; OKLCH L 42.8% C 0.095 H 317.3°. Best body text is #FFFFFF at 8.58:1 contrast (WCAG AA passes).

Color values

HEX	#643D71
RGB	rgb(100, 61, 113)
HSL	hsl(285, 30%, 34%)
HSV	hsv(285, 46%, 44%)
CMYK	cmyk(11.5%, 46%, 0%, 55.7%)
CIE-LAB	lab(32.35, 26.90, -23.26)
CIE-LCH	lch(32.35, 35.56, 319.15°)
OKLab	oklab(42.78% 0.0696 -0.0643)
OKLCH	oklch(42.78% 0.095 317.3)
XYZ	xyz(9.9045, 7.2394, 16.4952)
Luminance	0.0724 (WCAG relative)
Temperature	cool
Family	purple

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643D71 #4A713D

analogous

#4A3D71 #643D71 #713D64

triadic

#643D71 #71643D #3D7164

tetradic

#643D71 #714A3D #4A713D #3D6471

square

#643D71 #714A3D #4A713D #3D6471

split-complementary

#643D71 #64713D #3D714A

monochromatic

#1E1222 #412849 #643D71 #875299 #A474B4

Accessibility & contrast

On white

8.58

#643D71 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.45

#643D71 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643D71

8.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643D71	#FFFFFF	#000000	##FFFFFF
##643D71	1.00	8.58	2.45	8.58
#FFFFFF	8.58	1.00	21.00	1.00
#000000	2.45	21.00	1.00	21.00
##FFFFFF	8.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#344A73

Deuteranopia (green-blind)

#3F4D70

Tritanopia (blue-blind)

#644451

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #643d71;
/* rgb */ color: rgb(100, 61, 113);
/* oklch */ color: oklch(42.8% 0.095 317.3);

Tailwind

colors: {
  custom: {
    50: '#91739a',
    500: '#643d71',
    950: '#000000',
  },
}

SCSS

$custom: #643d71;
$custom-light: #91739a;
$custom-dark: #000000;

JSON

{
  "hex": "#643d71",
  "rgb": {
    "r": 100,
    "g": 61,
    "b": 113
  },
  "hsl": {
    "h": 285,
    "s": 29.885,
    "l": 34.118
  },
  "oklch": {
    "l": 0.42776,
    "c": 0.09476,
    "h": 317.3
  },
  "luminance": 0.07239
}

Semantic roles & 50–950 ramp

primary

#643D71

secondary

#789E6B

accent

#C6627B

background

#F9F7F9

surface

#F1EDF2

border

#CBC8CC

text

#0D080E

muted

#7E7B7E

Preview Lab

Preview with #643D71

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

Preview Lab → · Contrast checker → · Palette generator →