#643A7A#643A7A

#643A7A is a dark, moderate violet. Relative luminance 0.071; OKLCH L 42.8% C 0.111 H 312.9°. Best body text is #FFFFFF at 8.65:1 contrast (WCAG AA passes).

Color values

HEX	#643A7A
RGB	rgb(100, 58, 122)
HSL	hsl(279, 36%, 35%)
HSV	hsv(279, 52%, 48%)
CMYK	cmyk(18%, 52.5%, 0%, 52.2%)
CIE-LAB	lab(32.13, 30.80, -29.27)
CIE-LCH	lch(32.13, 42.48, 316.46°)
OKLab	oklab(42.77% 0.0758 -0.0816)
OKLCH	oklch(42.77% 0.111 312.9)
XYZ	xyz(10.2808, 7.1408, 19.2453)
Luminance	0.0714 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643A7A #507A3A

analogous

#443A7A #643A7A #7A3A70

triadic

#643A7A #7A643A #3A7A64

tetradic

#643A7A #7A443A #507A3A #3A707A

square

#643A7A #7A443A #507A3A #3A707A

split-complementary

#643A7A #707A3A #3A7A44

monochromatic

#201327 #422651 #643A7A #864EA3 #A372BC

Accessibility & contrast

On white

8.65

#643A7A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.43

#643A7A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643A7A

8.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643A7A	#FFFFFF	#000000	##FFFFFF
##643A7A	1.00	8.65	2.43	8.65
#FFFFFF	8.65	1.00	21.00	1.00
#000000	2.43	21.00	1.00	21.00
##FFFFFF	8.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B497C

Deuteranopia (green-blind)

#374D78

Tritanopia (blue-blind)

#624454

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #643a7a;
/* rgb */ color: rgb(100, 58, 122);
/* oklch */ color: oklch(42.8% 0.111 312.9);

Tailwind

colors: {
  custom: {
    50: '#9272a1',
    500: '#643a7a',
    950: '#000000',
  },
}

SCSS

$custom: #643a7a;
$custom-light: #9272a1;
$custom-dark: #000000;

JSON

{
  "hex": "#643a7a",
  "rgb": {
    "r": 100,
    "g": 58,
    "b": 122
  },
  "hsl": {
    "h": 279.375,
    "s": 35.556,
    "l": 35.294
  },
  "oklch": {
    "l": 0.42768,
    "c": 0.11135,
    "h": 312.9
  },
  "luminance": 0.07141
}

Semantic roles & 50–950 ramp

primary

#643A7A

secondary

#7FA66A

accent

#CC5C82

background

#F9F6F9

surface

#F1ECF2

border

#CBC7CC

text

#0D080F

muted

#7E7B7E

Preview Lab

Preview with #643A7A

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

Preview Lab → · Contrast checker → · Palette generator →