#643A7E#643A7E

#643A7E is a dark, moderate violet. Relative luminance 0.072; OKLCH L 43.0% C 0.116 H 310.9°. Best body text is #FFFFFF at 8.58:1 contrast (WCAG AA passes).

Color values

HEX	#643A7E
RGB	rgb(100, 58, 126)
HSL	hsl(277, 37%, 36%)
HSV	hsv(277, 54%, 49%)
CMYK	cmyk(20.6%, 54%, 0%, 50.6%)
CIE-LAB	lab(32.35, 31.76, -31.41)
CIE-LCH	lch(32.35, 44.67, 315.32°)
OKLab	oklab(43.01% 0.0762 -0.0878)
OKLCH	oklch(43.01% 0.116 310.9)
XYZ	xyz(10.5338, 7.2420, 20.5776)
Luminance	0.0724 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643A7E #547E3A

analogous

#423A7E #643A7E #7E3A76

triadic

#643A7E #7E643A #3A7E64

tetradic

#643A7E #7E423A #547E3A #3A767E

square

#643A7E #7E423A #547E3A #3A767E

split-complementary

#643A7E #767E3A #3A7E42

monochromatic

#21132A #432754 #643A7E #854DA8 #A274BF

Accessibility & contrast

On white

8.58

#643A7E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.45

#643A7E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643A7E

8.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643A7E	#FFFFFF	#000000	##FFFFFF
##643A7E	1.00	8.58	2.45	8.58
#FFFFFF	8.58	1.00	21.00	1.00
#000000	2.45	21.00	1.00	21.00
##FFFFFF	8.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#284A80

Deuteranopia (green-blind)

#354D7C

Tritanopia (blue-blind)

#614556

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #643a7e;
/* rgb */ color: rgb(100, 58, 126);
/* oklch */ color: oklch(43.0% 0.116 310.9);

Tailwind

colors: {
  custom: {
    50: '#9272a4',
    500: '#643a7e',
    950: '#000000',
  },
}

SCSS

$custom: #643a7e;
$custom-light: #9272a4;
$custom-dark: #000000;

JSON

{
  "hex": "#643a7e",
  "rgb": {
    "r": 100,
    "g": 58,
    "b": 126
  },
  "hsl": {
    "h": 277.059,
    "s": 36.957,
    "l": 36.078
  },
  "oklch": {
    "l": 0.43009,
    "c": 0.11629,
    "h": 310.9
  },
  "luminance": 0.07242
}

Semantic roles & 50–950 ramp

primary

#643A7E

secondary

#83A86C

accent

#CD5B86

background

#F9F6FA

surface

#F1ECF4

border

#CBC7CE

text

#0D080F

muted

#7E7B7F

Preview Lab

Preview with #643A7E

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

Preview Lab → · Contrast checker → · Palette generator →