#643A66#643A66

#643A66 is a dark, moderate purple. Relative luminance 0.067; OKLCH L 41.7% C 0.088 H 325.4°. Best body text is #FFFFFF at 8.98:1 contrast (WCAG AA passes).

Color values

HEX	#643A66
RGB	rgb(100, 58, 102)
HSL	hsl(297, 28%, 31%)
HSV	hsv(297, 43%, 40%)
CMYK	cmyk(2%, 43.1%, 0%, 60%)
CIE-LAB	lab(31.10, 26.27, -18.21)
CIE-LCH	lch(31.10, 31.96, 325.26°)
OKLab	oklab(41.67% 0.0721 -0.0498)
OKLCH	oklch(41.67% 0.088 325.4)
XYZ	xyz(9.1666, 6.6951, 13.3772)
Luminance	0.0669 (WCAG relative)
Temperature	neutral
Family	purple

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643A66 #3C663A

analogous

#4E3A66 #643A66 #663A52

triadic

#643A66 #66643A #3A6664

tetradic

#643A66 #664E3A #3C663A #3A5266

square

#643A66 #664E3A #3C663A #3A5266

split-complementary

#643A66 #52663A #3A664E

monochromatic

#180E18 #3E243F #643A66 #8A508D #AA6EAC

Accessibility & contrast

On white

8.98

#643A66 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.34

#643A66 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643A66

8.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643A66	#FFFFFF	#000000	##FFFFFF
##643A66	1.00	8.98	2.34	8.98
#FFFFFF	8.98	1.00	21.00	1.00
#000000	2.34	21.00	1.00	21.00
##FFFFFF	8.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#364668

Deuteranopia (green-blind)

#414B65

Tritanopia (blue-blind)

#663F4B

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #643a66;
/* rgb */ color: rgb(100, 58, 102);
/* oklch */ color: oklch(41.7% 0.088 325.4);

Tailwind

colors: {
  custom: {
    50: '#917191',
    500: '#643a66',
    950: '#000000',
  },
}

SCSS

$custom: #643a66;
$custom-light: #917191;
$custom-dark: #000000;

JSON

{
  "hex": "#643a66",
  "rgb": {
    "r": 100,
    "g": 58,
    "b": 102
  },
  "hsl": {
    "h": 297.273,
    "s": 27.5,
    "l": 31.373
  },
  "oklch": {
    "l": 0.41671,
    "c": 0.08765,
    "h": 325.4
  },
  "luminance": 0.06695
}

Semantic roles & 50–950 ramp

primary

#643A66

secondary

#689666

accent

#C46468

background

#F9F6F8

surface

#F1ECF0

border

#CBC7CB

text

#0D080D

muted

#7E7B7D

Preview Lab

Preview with #643A66

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

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