#643E71#643E71

#643E71 is a dark, moderate purple. Relative luminance 0.073; OKLCH L 43.0% C 0.093 H 317.1°. Best body text is #FFFFFF at 8.50:1 contrast (WCAG AA passes).

Color values

HEX	#643E71
RGB	rgb(100, 62, 113)
HSL	hsl(285, 29%, 34%)
HSV	hsv(285, 45%, 44%)
CMYK	cmyk(11.5%, 45.1%, 0%, 55.7%)
CIE-LAB	lab(32.58, 26.30, -22.89)
CIE-LCH	lch(32.58, 34.87, 318.96°)
OKLab	oklab(42.96% 0.068 -0.0632)
OKLCH	oklch(42.96% 0.093 317.1)
XYZ	xyz(9.9584, 7.3471, 16.5131)
Luminance	0.0735 (WCAG relative)
Temperature	cool
Family	purple

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643E71 #4B713E

analogous

#4B3E71 #643E71 #713E65

triadic

#643E71 #71643E #3E7164

tetradic

#643E71 #714B3E #4B713E #3E6571

square

#643E71 #714B3E #4B713E #3E6571

split-complementary

#643E71 #65713E #3E714B

monochromatic

#1E1322 #412849 #643E71 #875499 #A476B4

Accessibility & contrast

On white

8.50

#643E71 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.47

#643E71 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643E71

8.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643E71	#FFFFFF	#000000	##FFFFFF
##643E71	1.00	8.50	2.47	8.50
#FFFFFF	8.50	1.00	21.00	1.00
#000000	2.47	21.00	1.00	21.00
##FFFFFF	8.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#364A73

Deuteranopia (green-blind)

#404E70

Tritanopia (blue-blind)

#644552

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #643e71;
/* rgb */ color: rgb(100, 62, 113);
/* oklch */ color: oklch(43.0% 0.093 317.1);

Tailwind

colors: {
  custom: {
    50: '#91749a',
    500: '#643e71',
    950: '#000000',
  },
}

SCSS

$custom: #643e71;
$custom-light: #91749a;
$custom-dark: #000000;

JSON

{
  "hex": "#643e71",
  "rgb": {
    "r": 100,
    "g": 62,
    "b": 113
  },
  "hsl": {
    "h": 284.706,
    "s": 29.143,
    "l": 34.314
  },
  "oklch": {
    "l": 0.42955,
    "c": 0.09286,
    "h": 317.1
  },
  "luminance": 0.07347
}

Semantic roles & 50–950 ramp

primary

#643E71

secondary

#799E6D

accent

#C5627C

background

#F9F7F9

surface

#F1EDF2

border

#CBC8CC

text

#0D080E

muted

#7E7B7E

Preview Lab

Preview with #643E71

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

Preview Lab → · Contrast checker → · Palette generator →