#643A9C#643A9C

#643A9C is a mid, vivid violet. Relative luminance 0.081; OKLCH L 45.0% C 0.153 H 300.0°. Best body text is #FFFFFF at 7.99:1 contrast (WCAG AA passes).

Color values

HEX	#643A9C
RGB	rgb(100, 58, 156)
HSL	hsl(266, 46%, 42%)
HSV	hsv(266, 63%, 61%)
CMYK	cmyk(35.9%, 62.8%, 0%, 38.8%)
CIE-LAB	lab(34.26, 39.42, -46.78)
CIE-LCH	lch(34.26, 61.18, 310.12°)
OKLab	oklab(45.03% 0.0767 -0.1329)
OKLCH	oklch(45.03% 0.153 300)
XYZ	xyz(12.7679, 8.1356, 32.3437)
Luminance	0.0814 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643A9C #729C3A

analogous

#3A419C #643A9C #953A9C

triadic

#643A9C #9C643A #3A9C64

tetradic

#643A9C #9C3A41 #729C3A #3A9C95

square

#643A9C #9C3A41 #729C3A #3A9C95

split-complementary

#643A9C #9C953A #419C3A

monochromatic

#2B1943 #47296F #643A9C #8254BF #A380D0

Accessibility & contrast

On white

7.99

#643A9C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.63

#643A9C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643A9C

7.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643A9C	#FFFFFF	#000000	##FFFFFF
##643A9C	1.00	7.99	2.63	7.99
#FFFFFF	7.99	1.00	21.00	1.00
#000000	2.63	21.00	1.00	21.00
##FFFFFF	7.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00509F

Deuteranopia (green-blind)

#15509A

Tritanopia (blue-blind)

#584F65

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #643a9c;
/* rgb */ color: rgb(100, 58, 156);
/* oklch */ color: oklch(45.0% 0.153 300.0);

Tailwind

colors: {
  custom: {
    50: '#9472ba',
    500: '#643a9c',
    950: '#000000',
  },
}

SCSS

$custom: #643a9c;
$custom-light: #9472ba;
$custom-dark: #000000;

JSON

{
  "hex": "#643a9c",
  "rgb": {
    "r": 100,
    "g": 58,
    "b": 156
  },
  "hsl": {
    "h": 265.714,
    "s": 45.794,
    "l": 41.961
  },
  "oklch": {
    "l": 0.45025,
    "c": 0.15344,
    "h": 300
  },
  "luminance": 0.08136
}

Semantic roles & 50–950 ramp

primary

#643A9C

secondary

#9EBA78

accent

#D5529D

background

#F9F7FB

surface

#F2EDF6

border

#CCC8D0

text

#0E0812

muted

#7E7B81

Preview Lab

Preview with #643A9C

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

Preview Lab → · Contrast checker → · Palette generator →