#643E6B#643E6B

#643E6B is a dark, moderate purple. Relative luminance 0.072; OKLCH L 42.6% C 0.086 H 321.2°. Best body text is #FFFFFF at 8.60:1 contrast (WCAG AA passes).

Color values

HEX	#643E6B
RGB	rgb(100, 62, 107)
HSL	hsl(291, 27%, 33%)
HSV	hsv(291, 42%, 42%)
CMYK	cmyk(6.5%, 42.1%, 0%, 58%)
CIE-LAB	lab(32.29, 24.94, -19.55)
CIE-LCH	lch(32.29, 31.69, 321.91°)
OKLab	oklab(42.64% 0.0667 -0.0536)
OKLCH	oklch(42.64% 0.086 321.2)
XYZ	xyz(9.6317, 7.2164, 14.7926)
Luminance	0.0722 (WCAG relative)
Temperature	neutral
Family	purple

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643E6B #456B3E

analogous

#4D3E6B #643E6B #6B3E5B

triadic

#643E6B #6B643E #3E6B64

tetradic

#643E6B #6B4D3E #456B3E #3E5B6B

square

#643E6B #6B4D3E #456B3E #3E5B6B

split-complementary

#643E6B #5B6B3E #3E6B4D

monochromatic

#1C111E #402844 #643E6B #885492 #A675AF

Accessibility & contrast

On white

8.60

#643E6B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.44

#643E6B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643E6B

8.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643E6B	#FFFFFF	#000000	##FFFFFF
##643E6B	1.00	8.60	2.44	8.60
#FFFFFF	8.60	1.00	21.00	1.00
#000000	2.44	21.00	1.00	21.00
##FFFFFF	8.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#38496D

Deuteranopia (green-blind)

#424D6A

Tritanopia (blue-blind)

#65434F

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #643e6b;
/* rgb */ color: rgb(100, 62, 107);
/* oklch */ color: oklch(42.6% 0.086 321.2);

Tailwind

colors: {
  custom: {
    50: '#917495',
    500: '#643e6b',
    950: '#000000',
  },
}

SCSS

$custom: #643e6b;
$custom-light: #917495;
$custom-dark: #000000;

JSON

{
  "hex": "#643e6b",
  "rgb": {
    "r": 100,
    "g": 62,
    "b": 107
  },
  "hsl": {
    "h": 290.667,
    "s": 26.627,
    "l": 33.137
  },
  "oklch": {
    "l": 0.42643,
    "c": 0.08558,
    "h": 321.2
  },
  "luminance": 0.07216
}

Semantic roles & 50–950 ramp

primary

#643E6B

secondary

#729A6B

accent

#C36573

background

#F9F7F9

surface

#F1EDF1

border

#CBC8CB

text

#0D080D

muted

#7E7B7E

Preview Lab

Preview with #643E6B

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

Preview Lab → · Contrast checker → · Palette generator →