#643B92#643B92

#643B92 is a dark, vivid violet. Relative luminance 0.079; OKLCH L 44.5% C 0.140 H 302.9°. Best body text is #FFFFFF at 8.13:1 contrast (WCAG AA passes).

Color values

HEX	#643B92
RGB	rgb(100, 59, 146)
HSL	hsl(268, 42%, 40%)
HSV	hsv(268, 60%, 57%)
CMYK	cmyk(31.5%, 59.6%, 0%, 42.7%)
CIE-LAB	lab(33.80, 36.22, -41.45)
CIE-LCH	lch(33.80, 55.04, 311.15°)
OKLab	oklab(44.47% 0.0757 -0.1172)
OKLCH	oklch(44.47% 0.14 302.9)
XYZ	xyz(12.0066, 7.9126, 28.0833)
Luminance	0.0791 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643B92 #69923B

analogous

#3B3D92 #643B92 #8F3B92

triadic

#643B92 #92643B #3B9264

tetradic

#643B92 #923B3D #69923B #3B928F

square

#643B92 #923B3D #69923B #3B928F

split-complementary

#643B92 #928F3B #3D923B

monochromatic

#28183B #462966 #643B92 #8251B9 #A17DCA

Accessibility & contrast

On white

8.13

#643B92 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.58

#643B92 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643B92

8.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643B92	#FFFFFF	#000000	##FFFFFF
##643B92	1.00	8.13	2.58	8.13
#FFFFFF	8.13	1.00	21.00	1.00
#000000	2.58	21.00	1.00	21.00
##FFFFFF	8.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#134F95

Deuteranopia (green-blind)

#254F90

Tritanopia (blue-blind)

#5B4C60

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #643b92;
/* rgb */ color: rgb(100, 59, 146);
/* oklch */ color: oklch(44.5% 0.140 302.9);

Tailwind

colors: {
  custom: {
    50: '#9373b2',
    500: '#643b92',
    950: '#000000',
  },
}

SCSS

$custom: #643b92;
$custom-light: #9373b2;
$custom-dark: #000000;

JSON

{
  "hex": "#643b92",
  "rgb": {
    "r": 100,
    "g": 59,
    "b": 146
  },
  "hsl": {
    "h": 268.276,
    "s": 42.439,
    "l": 40.196
  },
  "oklch": {
    "l": 0.44471,
    "c": 0.13955,
    "h": 302.9
  },
  "luminance": 0.07913
}

Semantic roles & 50–950 ramp

primary

#643B92

secondary

#96B475

accent

#D25697

background

#F9F7FB

surface

#F2EDF6

border

#CCC8D0

text

#0D0811

muted

#7E7B80

Preview Lab

Preview with #643B92

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

Preview Lab → · Contrast checker → · Palette generator →