#643B9E#643B9E

#643B9E is a mid, vivid violet. Relative luminance 0.083; OKLCH L 45.3% C 0.154 H 299.2°. Best body text is #FFFFFF at 7.89:1 contrast (WCAG AA passes).

Color values

HEX	#643B9E
RGB	rgb(100, 59, 158)
HSL	hsl(265, 46%, 43%)
HSV	hsv(265, 63%, 62%)
CMYK	cmyk(36.7%, 62.7%, 0%, 38%)
CIE-LAB	lab(34.61, 39.39, -47.43)
CIE-LCH	lch(34.61, 61.66, 309.71°)
OKLab	oklab(45.32% 0.0754 -0.1348)
OKLCH	oklch(45.32% 0.154 299.2)
XYZ	xyz(12.9895, 8.3057, 33.2599)
Luminance	0.0831 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643B9E #759E3B

analogous

#3B449E #643B9E #953B9E

triadic

#643B9E #9E643B #3B9E64

tetradic

#643B9E #9E3B44 #759E3B #3B9E95

square

#643B9E #9E3B44 #759E3B #3B9E95

split-complementary

#643B9E #9E953B #449E3B

monochromatic

#2C1A45 #482A71 #643B9E #8256C0 #A383D1

Accessibility & contrast

On white

7.89

#643B9E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.66

#643B9E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643B9E

7.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643B9E	#FFFFFF	#000000	##FFFFFF
##643B9E	1.00	7.89	2.66	7.89
#FFFFFF	7.89	1.00	21.00	1.00
#000000	2.66	21.00	1.00	21.00
##FFFFFF	7.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051A1

Deuteranopia (green-blind)

#13519C

Tritanopia (blue-blind)

#575067

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #643b9e;
/* rgb */ color: rgb(100, 59, 158);
/* oklch */ color: oklch(45.3% 0.154 299.2);

Tailwind

colors: {
  custom: {
    50: '#9473bb',
    500: '#643b9e',
    950: '#000000',
  },
}

SCSS

$custom: #643b9e;
$custom-light: #9473bb;
$custom-dark: #000000;

JSON

{
  "hex": "#643b9e",
  "rgb": {
    "r": 100,
    "g": 59,
    "b": 158
  },
  "hsl": {
    "h": 264.848,
    "s": 45.622,
    "l": 42.549
  },
  "oklch": {
    "l": 0.45322,
    "c": 0.15444,
    "h": 299.2
  },
  "luminance": 0.08306
}

Semantic roles & 50–950 ramp

primary

#643B9E

secondary

#A0BB7A

accent

#D5539F

background

#F9F7FB

surface

#F2EDF6

border

#CCC8D0

text

#0E0812

muted

#7E7B81

Preview Lab

Preview with #643B9E

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

Preview Lab → · Contrast checker → · Palette generator →