#643B9D#643B9D

#643B9D is a mid, vivid violet. Relative luminance 0.083; OKLCH L 45.2% C 0.153 H 299.5°. Best body text is #FFFFFF at 7.91:1 contrast (WCAG AA passes).

Color values

HEX	#643B9D
RGB	rgb(100, 59, 157)
HSL	hsl(265, 45%, 42%)
HSV	hsv(265, 62%, 62%)
CMYK	cmyk(36.3%, 62.4%, 0%, 38.4%)
CIE-LAB	lab(34.54, 39.12, -46.94)
CIE-LCH	lch(34.54, 61.11, 309.81°)
OKLab	oklab(45.25% 0.0754 -0.1333)
OKLCH	oklch(45.25% 0.153 299.5)
XYZ	xyz(12.9038, 8.2715, 32.8085)
Luminance	0.0827 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643B9D #749D3B

analogous

#3B439D #643B9D #953B9D

triadic

#643B9D #9D643B #3B9D64

tetradic

#643B9D #9D3B43 #749D3B #3B9D95

square

#643B9D #9D3B43 #749D3B #3B9D95

split-complementary

#643B9D #9D953B #439D3B

monochromatic

#2B1A44 #482A71 #643B9D #8256BF #A382D0

Accessibility & contrast

On white

7.91

#643B9D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.65

#643B9D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643B9D

7.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643B9D	#FFFFFF	#000000	##FFFFFF
##643B9D	1.00	7.91	2.65	7.91
#FFFFFF	7.91	1.00	21.00	1.00
#000000	2.65	21.00	1.00	21.00
##FFFFFF	7.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051A0

Deuteranopia (green-blind)

#15509B

Tritanopia (blue-blind)

#575066

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #643b9d;
/* rgb */ color: rgb(100, 59, 157);
/* oklch */ color: oklch(45.2% 0.153 299.5);

Tailwind

colors: {
  custom: {
    50: '#9473bb',
    500: '#643b9d',
    950: '#000000',
  },
}

SCSS

$custom: #643b9d;
$custom-light: #9473bb;
$custom-dark: #000000;

JSON

{
  "hex": "#643b9d",
  "rgb": {
    "r": 100,
    "g": 59,
    "b": 157
  },
  "hsl": {
    "h": 265.102,
    "s": 45.37,
    "l": 42.353
  },
  "oklch": {
    "l": 0.45249,
    "c": 0.15321,
    "h": 299.5
  },
  "luminance": 0.08272
}

Semantic roles & 50–950 ramp

primary

#643B9D

secondary

#9FBA7A

accent

#D5539F

background

#F9F7FB

surface

#F2EDF6

border

#CCC8D0

text

#0E0812

muted

#7E7B81

Preview Lab

Preview with #643B9D

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

Preview Lab → · Contrast checker → · Palette generator →