#643F68#643F68

#643F68 is a dark, moderate purple. Relative luminance 0.073; OKLCH L 42.7% C 0.080 H 323.4°. Best body text is #FFFFFF at 8.56:1 contrast (WCAG AA passes).

Color values

HEX	#643F68
RGB	rgb(100, 63, 104)
HSL	hsl(294, 25%, 33%)
HSV	hsv(294, 39%, 41%)
CMYK	cmyk(3.8%, 39.4%, 0%, 59.2%)
CIE-LAB	lab(32.40, 23.67, -17.48)
CIE-LCH	lch(32.40, 29.43, 323.56°)
OKLab	oklab(42.68% 0.0643 -0.0477)
OKLCH	oklch(42.68% 0.08 323.4)
XYZ	xyz(9.5315, 7.2642, 13.9941)
Luminance	0.0726 (WCAG relative)
Temperature	neutral
Family	purple

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643F68 #43683F

analogous

#4F3F68 #643F68 #683F57

triadic

#643F68 #68643F #3F6864

tetradic

#643F68 #684F3F #43683F #3F5768

square

#643F68 #684F3F #43683F #3F5768

split-complementary

#643F68 #57683F #3F684F

monochromatic

#1B111C #3F2842 #643F68 #89568E #A676AC

Accessibility & contrast

On white

8.56

#643F68 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.45

#643F68 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643F68

8.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643F68	#FFFFFF	#000000	##FFFFFF
##643F68	1.00	8.56	2.45	8.56
#FFFFFF	8.56	1.00	21.00	1.00
#000000	2.45	21.00	1.00	21.00
##FFFFFF	8.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B496A

Deuteranopia (green-blind)

#444E67

Tritanopia (blue-blind)

#65434E

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #643f68;
/* rgb */ color: rgb(100, 63, 104);
/* oklch */ color: oklch(42.7% 0.080 323.4);

Tailwind

colors: {
  custom: {
    50: '#917593',
    500: '#643f68',
    950: '#000000',
  },
}

SCSS

$custom: #643f68;
$custom-light: #917593;
$custom-dark: #000000;

JSON

{
  "hex": "#643f68",
  "rgb": {
    "r": 100,
    "g": 63,
    "b": 104
  },
  "hsl": {
    "h": 294.146,
    "s": 24.551,
    "l": 32.745
  },
  "oklch": {
    "l": 0.42677,
    "c": 0.08006,
    "h": 323.4
  },
  "luminance": 0.07264
}

Semantic roles & 50–950 ramp

primary

#643F68

secondary

#70976C

accent

#C16770

background

#F8F7F9

surface

#F0EDF1

border

#CBC8CB

text

#0D080D

muted

#7D7B7E

Preview Lab

Preview with #643F68

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

Preview Lab → · Contrast checker → · Palette generator →