#643F8D#643F8D

#643F8D is a dark, vivid violet. Relative luminance 0.082; OKLCH L 44.8% C 0.127 H 303.6°. Best body text is #FFFFFF at 7.96:1 contrast (WCAG AA passes).

Color values

HEX	#643F8D
RGB	rgb(100, 63, 141)
HSL	hsl(268, 38%, 40%)
HSV	hsv(268, 55%, 55%)
CMYK	cmyk(29.1%, 55.3%, 0%, 44.7%)
CIE-LAB	lab(34.37, 32.60, -37.47)
CIE-LCH	lch(34.37, 49.67, 311.02°)
OKLab	oklab(44.79% 0.0701 -0.1056)
OKLCH	oklch(44.79% 0.127 303.6)
XYZ	xyz(11.8397, 8.1875, 26.1507)
Luminance	0.0819 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643F8D #688D3F

analogous

#3F418D #643F8D #8B3F8D

triadic

#643F8D #8D643F #3F8D64

tetradic

#643F8D #8D3F41 #688D3F #3F8D8B

square

#643F8D #8D3F41 #688D3F #3F8D8B

split-complementary

#643F8D #8D8B3F #418D3F

monochromatic

#281938 #462C63 #643F8D #8256B3 #A180C6

Accessibility & contrast

On white

7.96

#643F8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.64

#643F8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643F8D

7.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643F8D	#FFFFFF	#000000	##FFFFFF
##643F8D	1.00	7.96	2.64	7.96
#FFFFFF	7.96	1.00	21.00	1.00
#000000	2.64	21.00	1.00	21.00
##FFFFFF	7.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#235090

Deuteranopia (green-blind)

#2F518B

Tritanopia (blue-blind)

#5D4E60

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #643f8d;
/* rgb */ color: rgb(100, 63, 141);
/* oklch */ color: oklch(44.8% 0.127 303.6);

Tailwind

colors: {
  custom: {
    50: '#9375af',
    500: '#643f8d',
    950: '#000000',
  },
}

SCSS

$custom: #643f8d;
$custom-light: #9375af;
$custom-dark: #000000;

JSON

{
  "hex": "#643f8d",
  "rgb": {
    "r": 100,
    "g": 63,
    "b": 141
  },
  "hsl": {
    "h": 268.462,
    "s": 38.235,
    "l": 40
  },
  "oklch": {
    "l": 0.44788,
    "c": 0.12675,
    "h": 303.6
  },
  "luminance": 0.08187
}

Semantic roles & 50–950 ramp

primary

#643F8D

secondary

#95B177

accent

#CE5A97

background

#F9F7FA

surface

#F1EDF4

border

#CBC8CE

text

#0D0810

muted

#7E7B7F

Preview Lab

Preview with #643F8D

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

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