#643E9D#643E9D

#643E9D is a mid, vivid violet. Relative luminance 0.086; OKLCH L 45.7% C 0.149 H 298.8°. Best body text is #FFFFFF at 7.73:1 contrast (WCAG AA passes).

Color values

HEX	#643E9D
RGB	rgb(100, 62, 157)
HSL	hsl(264, 43%, 43%)
HSV	hsv(264, 61%, 62%)
CMYK	cmyk(36.3%, 60.5%, 0%, 38.4%)
CIE-LAB	lab(35.18, 37.42, -45.91)
CIE-LCH	lch(35.18, 59.23, 309.18°)
OKLab	oklab(45.71% 0.0717 -0.1303)
OKLCH	oklch(45.71% 0.149 298.8)
XYZ	xyz(13.0625, 8.5888, 32.8614)
Luminance	0.0859 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643E9D #779D3E

analogous

#3E479D #643E9D #933E9D

triadic

#643E9D #9D643E #3E9D64

tetradic

#643E9D #9D3E47 #779D3E #3E9D93

square

#643E9D #9D3E47 #779D3E #3E9D93

split-complementary

#643E9D #9D933E #479D3E

monochromatic

#2C1B45 #482D71 #643E9D #825ABE #A386CF

Accessibility & contrast

On white

7.73

#643E9D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.72

#643E9D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643E9D

7.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643E9D	#FFFFFF	#000000	##FFFFFF
##643E9D	1.00	7.73	2.72	7.73
#FFFFFF	7.73	1.00	21.00	1.00
#000000	2.72	21.00	1.00	21.00
##FFFFFF	7.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0353A0

Deuteranopia (green-blind)

#1C529B

Tritanopia (blue-blind)

#575267

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #643e9d;
/* rgb */ color: rgb(100, 62, 157);
/* oklch */ color: oklch(45.7% 0.149 298.8);

Tailwind

colors: {
  custom: {
    50: '#9475ba',
    500: '#643e9d',
    950: '#000000',
  },
}

SCSS

$custom: #643e9d;
$custom-light: #9475ba;
$custom-dark: #000000;

JSON

{
  "hex": "#643e9d",
  "rgb": {
    "r": 100,
    "g": 62,
    "b": 157
  },
  "hsl": {
    "h": 264,
    "s": 43.379,
    "l": 42.941
  },
  "oklch": {
    "l": 0.45714,
    "c": 0.14875,
    "h": 298.8
  },
  "luminance": 0.08589
}

Semantic roles & 50–950 ramp

primary

#643E9D

secondary

#A1BA7D

accent

#D355A1

background

#F9F7FB

surface

#F2EDF6

border

#CCC8D0

text

#0D0812

muted

#7E7B81

Preview Lab

Preview with #643E9D

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

Preview Lab → · Contrast checker → · Palette generator →