#643C82#643C82

#643C82 is a dark, moderate violet. Relative luminance 0.076; OKLCH L 43.6% C 0.118 H 308.7°. Best body text is #FFFFFF at 8.36:1 contrast (WCAG AA passes).

Color values

HEX	#643C82
RGB	rgb(100, 60, 130)
HSL	hsl(274, 37%, 37%)
HSV	hsv(274, 54%, 51%)
CMYK	cmyk(23.1%, 53.8%, 0%, 49%)
CIE-LAB	lab(33.03, 31.57, -32.82)
CIE-LCH	lch(33.03, 45.53, 313.89°)
OKLab	oklab(43.59% 0.0736 -0.0919)
OKLCH	oklch(43.59% 0.118 308.7)
XYZ	xyz(10.8999, 7.5529, 21.9984)
Luminance	0.0755 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643C82 #5A823C

analogous

#413C82 #643C82 #823C7D

triadic

#643C82 #82643C #3C8264

tetradic

#643C82 #82413C #5A823C #3C7D82

square

#643C82 #82413C #5A823C #3C7D82

split-complementary

#643C82 #7D823C #3C8241

monochromatic

#24152E #442958 #643C82 #844FAC #A178C1

Accessibility & contrast

On white

8.36

#643C82 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.51

#643C82 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643C82

8.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643C82	#FFFFFF	#000000	##FFFFFF
##643C82	1.00	8.36	2.51	8.36
#FFFFFF	8.36	1.00	21.00	1.00
#000000	2.51	21.00	1.00	21.00
##FFFFFF	8.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#284C84

Deuteranopia (green-blind)

#344E80

Tritanopia (blue-blind)

#604859

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #643c82;
/* rgb */ color: rgb(100, 60, 130);
/* oklch */ color: oklch(43.6% 0.118 308.7);

Tailwind

colors: {
  custom: {
    50: '#9273a7',
    500: '#643c82',
    950: '#000000',
  },
}

SCSS

$custom: #643c82;
$custom-light: #9273a7;
$custom-dark: #000000;

JSON

{
  "hex": "#643c82",
  "rgb": {
    "r": 100,
    "g": 60,
    "b": 130
  },
  "hsl": {
    "h": 274.286,
    "s": 36.842,
    "l": 37.255
  },
  "oklch": {
    "l": 0.43588,
    "c": 0.11779,
    "h": 308.7
  },
  "luminance": 0.07553
}

Semantic roles & 50–950 ramp

primary

#643C82

secondary

#89AA6F

accent

#CD5B8C

background

#F9F7FA

surface

#F1EDF4

border

#CBC8CE

text

#0D080F

muted

#7E7B7F

Preview Lab

Preview with #643C82

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

Preview Lab → · Contrast checker → · Palette generator →