#643C92#643C92

#643C92 is a dark, vivid violet. Relative luminance 0.080; OKLCH L 44.6% C 0.138 H 302.6°. Best body text is #FFFFFF at 8.07:1 contrast (WCAG AA passes).

Color values

HEX	#643C92
RGB	rgb(100, 60, 146)
HSL	hsl(268, 42%, 40%)
HSV	hsv(268, 59%, 57%)
CMYK	cmyk(31.5%, 58.9%, 0%, 42.7%)
CIE-LAB	lab(34.02, 35.65, -41.10)
CIE-LCH	lch(34.02, 54.41, 310.94°)
OKLab	oklab(44.63% 0.0744 -0.1162)
OKLCH	oklch(44.63% 0.138 302.6)
XYZ	xyz(12.0585, 8.0164, 28.1006)
Luminance	0.0802 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643C92 #6A923C

analogous

#3C3F92 #643C92 #8F3C92

triadic

#643C92 #92643C #3C9264

tetradic

#643C92 #923C3F #6A923C #3C928F

square

#643C92 #923C3F #6A923C #3C928F

split-complementary

#643C92 #928F3C #3F923C

monochromatic

#29183B #462A67 #643C92 #8253B8 #A27ECA

Accessibility & contrast

On white

8.07

#643C92 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.60

#643C92 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643C92

8.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643C92	#FFFFFF	#000000	##FFFFFF
##643C92	1.00	8.07	2.60	8.07
#FFFFFF	8.07	1.00	21.00	1.00
#000000	2.60	21.00	1.00	21.00
##FFFFFF	8.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#164F95

Deuteranopia (green-blind)

#275090

Tritanopia (blue-blind)

#5B4D61

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #643c92;
/* rgb */ color: rgb(100, 60, 146);
/* oklch */ color: oklch(44.6% 0.138 302.6);

Tailwind

colors: {
  custom: {
    50: '#9373b2',
    500: '#643c92',
    950: '#000000',
  },
}

SCSS

$custom: #643c92;
$custom-light: #9373b2;
$custom-dark: #000000;

JSON

{
  "hex": "#643c92",
  "rgb": {
    "r": 100,
    "g": 60,
    "b": 146
  },
  "hsl": {
    "h": 267.907,
    "s": 41.748,
    "l": 40.392
  },
  "oklch": {
    "l": 0.44629,
    "c": 0.13797,
    "h": 302.6
  },
  "luminance": 0.08016
}

Semantic roles & 50–950 ramp

primary

#643C92

secondary

#97B476

accent

#D25698

background

#F9F7FB

surface

#F2EDF6

border

#CCC8D0

text

#0D0811

muted

#7E7B80

Preview Lab

Preview with #643C92

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

Preview Lab → · Contrast checker → · Palette generator →