#643B64#643B64

#643B64 is a dark, moderate purple. Relative luminance 0.068; OKLCH L 41.8% C 0.083 H 326.9°. Best body text is #FFFFFF at 8.93:1 contrast (WCAG AA passes).

Color values

HEX	#643B64
RGB	rgb(100, 59, 100)
HSL	hsl(300, 26%, 31%)
HSV	hsv(300, 41%, 39%)
CMYK	cmyk(0%, 41%, 0%, 60.8%)
CIE-LAB	lab(31.25, 25.24, -16.71)
CIE-LCH	lch(31.25, 30.27, 326.50°)
OKLab	oklab(41.75% 0.07 -0.0455)
OKLCH	oklch(41.75% 0.083 326.9)
XYZ	xyz(9.1196, 6.7578, 12.8781)
Luminance	0.0676 (WCAG relative)
Temperature	neutral
Family	purple

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643B64 #3B643B

analogous

#4F3B64 #643B64 #643B4F

triadic

#643B64 #64643B #3B6464

tetradic

#643B64 #644F3B #3B643B #3B4F64

square

#643B64 #644F3B #3B643B #3B4F64

split-complementary

#643B64 #4F643B #3B644F

monochromatic

#170E17 #3E243E #643B64 #8A528A #AA6FAA

Accessibility & contrast

On white

8.93

#643B64 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.35

#643B64 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643B64

8.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643B64	#FFFFFF	#000000	##FFFFFF
##643B64	1.00	8.93	2.35	8.93
#FFFFFF	8.93	1.00	21.00	1.00
#000000	2.35	21.00	1.00	21.00
##FFFFFF	8.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#384665

Deuteranopia (green-blind)

#434B63

Tritanopia (blue-blind)

#663F4B

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #643b64;
/* rgb */ color: rgb(100, 59, 100);
/* oklch */ color: oklch(41.8% 0.083 326.9);

Tailwind

colors: {
  custom: {
    50: '#917290',
    500: '#643b64',
    950: '#000000',
  },
}

SCSS

$custom: #643b64;
$custom-light: #917290;
$custom-dark: #000000;

JSON

{
  "hex": "#643b64",
  "rgb": {
    "r": 100,
    "g": 59,
    "b": 100
  },
  "hsl": {
    "h": 300,
    "s": 25.786,
    "l": 31.176
  },
  "oklch": {
    "l": 0.41751,
    "c": 0.08346,
    "h": 326.9
  },
  "luminance": 0.06757
}

Semantic roles & 50–950 ramp

primary

#643B64

secondary

#679467

accent

#C26666

background

#F9F6F8

surface

#F1ECF0

border

#CBC7CB

text

#0D080C

muted

#7E7B7D

Preview Lab

Preview with #643B64

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

Preview Lab → · Contrast checker → · Palette generator →