#643D9D#643D9D

#643D9D is a mid, vivid violet. Relative luminance 0.085; OKLCH L 45.6% C 0.150 H 299.0°. Best body text is #FFFFFF at 7.79:1 contrast (WCAG AA passes).

Color values

HEX	#643D9D
RGB	rgb(100, 61, 157)
HSL	hsl(264, 44%, 43%)
HSV	hsv(264, 61%, 62%)
CMYK	cmyk(36.3%, 61.1%, 0%, 38.4%)
CIE-LAB	lab(34.97, 37.99, -46.26)
CIE-LCH	lch(34.97, 59.86, 309.40°)
OKLab	oklab(45.56% 0.073 -0.1313)
OKLCH	oklch(45.56% 0.15 299)
XYZ	xyz(13.0086, 8.4810, 32.8434)
Luminance	0.0848 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643D9D #769D3D

analogous

#3D469D #643D9D #943D9D

triadic

#643D9D #9D643D #3D9D64

tetradic

#643D9D #9D3D46 #769D3D #3D9D94

square

#643D9D #9D3D46 #769D3D #3D9D94

split-complementary

#643D9D #9D943D #469D3D

monochromatic

#2C1B45 #482C71 #643D9D #8259BE #A385D0

Accessibility & contrast

On white

7.79

#643D9D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.70

#643D9D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643D9D

7.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643D9D	#FFFFFF	#000000	##FFFFFF
##643D9D	1.00	7.79	2.70	7.79
#FFFFFF	7.79	1.00	21.00	1.00
#000000	2.70	21.00	1.00	21.00
##FFFFFF	7.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052A0

Deuteranopia (green-blind)

#1A519B

Tritanopia (blue-blind)

#575167

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #643d9d;
/* rgb */ color: rgb(100, 61, 157);
/* oklch */ color: oklch(45.6% 0.150 299.0);

Tailwind

colors: {
  custom: {
    50: '#9474ba',
    500: '#643d9d',
    950: '#000000',
  },
}

SCSS

$custom: #643d9d;
$custom-light: #9474ba;
$custom-dark: #000000;

JSON

{
  "hex": "#643d9d",
  "rgb": {
    "r": 100,
    "g": 61,
    "b": 157
  },
  "hsl": {
    "h": 264.375,
    "s": 44.037,
    "l": 42.745
  },
  "oklch": {
    "l": 0.45557,
    "c": 0.15025,
    "h": 299
  },
  "luminance": 0.08481
}

Semantic roles & 50–950 ramp

primary

#643D9D

secondary

#A1BA7C

accent

#D454A0

background

#F9F7FB

surface

#F2EDF6

border

#CCC8D0

text

#0E0812

muted

#7E7B81

Preview Lab

Preview with #643D9D

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

Preview Lab → · Contrast checker → · Palette generator →