#643E82#643E82

#643E82 is a dark, moderate violet. Relative luminance 0.078; OKLCH L 43.9% C 0.114 H 308.2°. Best body text is #FFFFFF at 8.22:1 contrast (WCAG AA passes).

Color values

HEX	#643E82
RGB	rgb(100, 62, 130)
HSL	hsl(274, 35%, 38%)
HSV	hsv(274, 52%, 51%)
CMYK	cmyk(23.1%, 52.3%, 0%, 49%)
CIE-LAB	lab(33.49, 30.39, -32.09)
CIE-LCH	lch(33.49, 44.19, 313.44°)
OKLab	oklab(43.93% 0.0707 -0.0898)
OKLCH	oklch(43.93% 0.114 308.2)
XYZ	xyz(11.0066, 7.7664, 22.0340)
Luminance	0.0777 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643E82 #5C823E

analogous

#423E82 #643E82 #823E7E

triadic

#643E82 #82643E #3E8264

tetradic

#643E82 #82423E #5C823E #3E7E82

square

#643E82 #82423E #5C823E #3E7E82

split-complementary

#643E82 #7E823E #3E8242

monochromatic

#24162F #442A59 #643E82 #8452AB #A17BC0

Accessibility & contrast

On white

8.22

#643E82 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.55

#643E82 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643E82

8.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643E82	#FFFFFF	#000000	##FFFFFF
##643E82	1.00	8.22	2.55	8.22
#FFFFFF	8.22	1.00	21.00	1.00
#000000	2.55	21.00	1.00	21.00
##FFFFFF	8.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B4D84

Deuteranopia (green-blind)

#364F80

Tritanopia (blue-blind)

#604A5A

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #643e82;
/* rgb */ color: rgb(100, 62, 130);
/* oklch */ color: oklch(43.9% 0.114 308.2);

Tailwind

colors: {
  custom: {
    50: '#9274a6',
    500: '#643e82',
    950: '#000000',
  },
}

SCSS

$custom: #643e82;
$custom-light: #9274a6;
$custom-dark: #000000;

JSON

{
  "hex": "#643e82",
  "rgb": {
    "r": 100,
    "g": 62,
    "b": 130
  },
  "hsl": {
    "h": 273.529,
    "s": 35.417,
    "l": 37.647
  },
  "oklch": {
    "l": 0.43927,
    "c": 0.1143,
    "h": 308.2
  },
  "luminance": 0.07766
}

Semantic roles & 50–950 ramp

primary

#643E82

secondary

#8BAA72

accent

#CB5C8D

background

#F9F7FA

surface

#F1EDF4

border

#CBC8CE

text

#0D080F

muted

#7E7B7F

Preview Lab

Preview with #643E82

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

Preview Lab → · Contrast checker → · Palette generator →