#643C6B#643C6B

#643C6B is a dark, moderate purple. Relative luminance 0.070; OKLCH L 42.3% C 0.089 H 321.5°. Best body text is #FFFFFF at 8.75:1 contrast (WCAG AA passes).

Color values

HEX	#643C6B
RGB	rgb(100, 60, 107)
HSL	hsl(291, 28%, 33%)
HSV	hsv(291, 44%, 42%)
CMYK	cmyk(6.5%, 43.9%, 0%, 58%)
CIE-LAB	lab(31.81, 26.15, -20.30)
CIE-LCH	lch(31.81, 33.10, 322.18°)
OKLab	oklab(42.28% 0.07 -0.0557)
OKLCH	oklch(42.28% 0.089 321.5)
XYZ	xyz(9.5249, 7.0029, 14.7570)
Luminance	0.0700 (WCAG relative)
Temperature	neutral
Family	purple

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643C6B #436B3C

analogous

#4C3C6B #643C6B #6B3C5A

triadic

#643C6B #6B643C #3C6B64

tetradic

#643C6B #6B4C3C #436B3C #3C5A6B

square

#643C6B #6B4C3C #436B3C #3C5A6B

split-complementary

#643C6B #5A6B3C #3C6B4C

monochromatic

#1B101D #3F2644 #643C6B #895292 #A672B0

Accessibility & contrast

On white

8.75

#643C6B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.40

#643C6B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643C6B

8.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643C6B	#FFFFFF	#000000	##FFFFFF
##643C6B	1.00	8.75	2.40	8.75
#FFFFFF	8.75	1.00	21.00	1.00
#000000	2.40	21.00	1.00	21.00
##FFFFFF	8.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#36486D

Deuteranopia (green-blind)

#414C6A

Tritanopia (blue-blind)

#65424E

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #643c6b;
/* rgb */ color: rgb(100, 60, 107);
/* oklch */ color: oklch(42.3% 0.089 321.5);

Tailwind

colors: {
  custom: {
    50: '#917395',
    500: '#643c6b',
    950: '#000000',
  },
}

SCSS

$custom: #643c6b;
$custom-light: #917395;
$custom-dark: #000000;

JSON

{
  "hex": "#643c6b",
  "rgb": {
    "r": 100,
    "g": 60,
    "b": 107
  },
  "hsl": {
    "h": 291.064,
    "s": 28.144,
    "l": 32.745
  },
  "oklch": {
    "l": 0.42282,
    "c": 0.08949,
    "h": 321.5
  },
  "luminance": 0.07003
}

Semantic roles & 50–950 ramp

primary

#643C6B

secondary

#709A69

accent

#C46372

background

#F9F7F9

surface

#F1EDF1

border

#CBC8CB

text

#0D080D

muted

#7E7B7E

Preview Lab

Preview with #643C6B

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

Preview Lab → · Contrast checker → · Palette generator →