#643D83#643D83

#643D83 is a dark, moderate violet. Relative luminance 0.077; OKLCH L 43.8% C 0.117 H 308.0°. Best body text is #FFFFFF at 8.28:1 contrast (WCAG AA passes).

Color values

HEX	#643D83
RGB	rgb(100, 61, 131)
HSL	hsl(273, 36%, 38%)
HSV	hsv(273, 53%, 51%)
CMYK	cmyk(23.7%, 53.4%, 0%, 48.6%)
CIE-LAB	lab(33.32, 31.23, -32.98)
CIE-LCH	lch(33.32, 45.42, 313.43°)
OKLab	oklab(43.82% 0.0723 -0.0924)
OKLCH	oklch(43.82% 0.117 308)
XYZ	xyz(11.0202, 7.6856, 22.3713)
Luminance	0.0769 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643D83 #5C833D

analogous

#413D83 #643D83 #833D7F

triadic

#643D83 #83643D #3D8364

tetradic

#643D83 #83413D #5C833D #3D7F83

square

#643D83 #83413D #5C833D #3D7F83

split-complementary

#643D83 #7F833D #3D8341

monochromatic

#24162F #442A59 #643D83 #8450AD #A17AC1

Accessibility & contrast

On white

8.28

#643D83 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.54

#643D83 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643D83

8.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643D83	#FFFFFF	#000000	##FFFFFF
##643D83	1.00	8.28	2.54	8.28
#FFFFFF	8.28	1.00	21.00	1.00
#000000	2.54	21.00	1.00	21.00
##FFFFFF	8.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#294D85

Deuteranopia (green-blind)

#354F81

Tritanopia (blue-blind)

#60495A

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #643d83;
/* rgb */ color: rgb(100, 61, 131);
/* oklch */ color: oklch(43.8% 0.117 308.0);

Tailwind

colors: {
  custom: {
    50: '#9274a7',
    500: '#643d83',
    950: '#000000',
  },
}

SCSS

$custom: #643d83;
$custom-light: #9274a7;
$custom-dark: #000000;

JSON

{
  "hex": "#643d83",
  "rgb": {
    "r": 100,
    "g": 61,
    "b": 131
  },
  "hsl": {
    "h": 273.429,
    "s": 36.458,
    "l": 37.647
  },
  "oklch": {
    "l": 0.43818,
    "c": 0.11733,
    "h": 308
  },
  "luminance": 0.07686
}

Semantic roles & 50–950 ramp

primary

#643D83

secondary

#8BAB71

accent

#CC5B8D

background

#F9F7FA

surface

#F1EDF4

border

#CBC8CE

text

#0D080F

muted

#7E7B7F

Preview Lab

Preview with #643D83

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

Preview Lab → · Contrast checker → · Palette generator →