#643F67#643F67

#643F67 is a dark, moderate purple. Relative luminance 0.072; OKLCH L 42.6% C 0.079 H 324.2°. Best body text is #FFFFFF at 8.58:1 contrast (WCAG AA passes).

Color values

HEX	#643F67
RGB	rgb(100, 63, 103)
HSL	hsl(296, 24%, 33%)
HSV	hsv(296, 39%, 40%)
CMYK	cmyk(2.9%, 38.8%, 0%, 59.6%)
CIE-LAB	lab(32.36, 23.46, -16.91)
CIE-LCH	lch(32.36, 28.92, 324.20°)
OKLab	oklab(42.63% 0.064 -0.0461)
OKLCH	oklch(42.63% 0.079 324.2)
XYZ	xyz(9.4810, 7.2440, 13.7281)
Luminance	0.0724 (WCAG relative)
Temperature	neutral
Family	purple

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643F67 #42673F

analogous

#503F67 #643F67 #673F56

triadic

#643F67 #67643F #3F6764

tetradic

#643F67 #67503F #42673F #3F5667

square

#643F67 #67503F #42673F #3F5667

split-complementary

#643F67 #56673F #3F6750

monochromatic

#1A111B #3F2841 #643F67 #89568D #A776AB

Accessibility & contrast

On white

8.58

#643F67 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.45

#643F67 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643F67

8.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643F67	#FFFFFF	#000000	##FFFFFF
##643F67	1.00	8.58	2.45	8.58
#FFFFFF	8.58	1.00	21.00	1.00
#000000	2.45	21.00	1.00	21.00
##FFFFFF	8.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B4968

Deuteranopia (green-blind)

#454E66

Tritanopia (blue-blind)

#66434E

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #643f67;
/* rgb */ color: rgb(100, 63, 103);
/* oklch */ color: oklch(42.6% 0.079 324.2);

Tailwind

colors: {
  custom: {
    50: '#917592',
    500: '#643f67',
    950: '#000000',
  },
}

SCSS

$custom: #643f67;
$custom-light: #917592;
$custom-dark: #000000;

JSON

{
  "hex": "#643f67",
  "rgb": {
    "r": 100,
    "g": 63,
    "b": 103
  },
  "hsl": {
    "h": 295.5,
    "s": 24.096,
    "l": 32.549
  },
  "oklch": {
    "l": 0.42629,
    "c": 0.0789,
    "h": 324.2
  },
  "luminance": 0.07244
}

Semantic roles & 50–950 ramp

primary

#643F67

secondary

#6F966C

accent

#C1676E

background

#F8F7F9

surface

#F0EDF1

border

#CBC8CB

text

#0D080D

muted

#7D7B7E

Preview Lab

Preview with #643F67

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

Preview Lab → · Contrast checker → · Palette generator →