#643E66#643E66

#643E66 is a dark, moderate purple. Relative luminance 0.071; OKLCH L 42.4% C 0.080 H 325.1°. Best body text is #FFFFFF at 8.67:1 contrast (WCAG AA passes).

Color values

HEX	#643E66
RGB	rgb(100, 62, 102)
HSL	hsl(297, 24%, 32%)
HSV	hsv(297, 39%, 40%)
CMYK	cmyk(2%, 39.2%, 0%, 60%)
CIE-LAB	lab(32.07, 23.85, -16.73)
CIE-LCH	lch(32.07, 29.13, 324.96°)
OKLab	oklab(42.4% 0.0654 -0.0456)
OKLCH	oklch(42.4% 0.08 325.1)
XYZ	xyz(9.3762, 7.1142, 13.4471)
Luminance	0.0711 (WCAG relative)
Temperature	neutral
Family	purple

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643E66 #40663E

analogous

#503E66 #643E66 #663E54

triadic

#643E66 #66643E #3E6664

tetradic

#643E66 #66503E #40663E #3E5466

square

#643E66 #66503E #40663E #3E5466

split-complementary

#643E66 #54663E #3E6650

monochromatic

#19101A #3F2740 #643E66 #89558C #A874AA

Accessibility & contrast

On white

8.67

#643E66 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.42

#643E66 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643E66

8.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643E66	#FFFFFF	#000000	##FFFFFF
##643E66	1.00	8.67	2.42	8.67
#FFFFFF	8.67	1.00	21.00	1.00
#000000	2.42	21.00	1.00	21.00
##FFFFFF	8.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A4867

Deuteranopia (green-blind)

#444D65

Tritanopia (blue-blind)

#66424D

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #643e66;
/* rgb */ color: rgb(100, 62, 102);
/* oklch */ color: oklch(42.4% 0.080 325.1);

Tailwind

colors: {
  custom: {
    50: '#917491',
    500: '#643e66',
    950: '#000000',
  },
}

SCSS

$custom: #643e66;
$custom-light: #917491;
$custom-dark: #000000;

JSON

{
  "hex": "#643e66",
  "rgb": {
    "r": 100,
    "g": 62,
    "b": 102
  },
  "hsl": {
    "h": 297,
    "s": 24.39,
    "l": 32.157
  },
  "oklch": {
    "l": 0.42395,
    "c": 0.07975,
    "h": 325.1
  },
  "luminance": 0.07114
}

Semantic roles & 50–950 ramp

primary

#643E66

secondary

#6C966A

accent

#C1676B

background

#F8F7F8

surface

#F0EDF0

border

#CBC8CB

text

#0D080D

muted

#7D7B7D

Preview Lab

Preview with #643E66

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

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