#643A9D#643A9D

#643A9D is a mid, vivid violet. Relative luminance 0.082; OKLCH L 45.1% C 0.155 H 299.7°. Best body text is #FFFFFF at 7.97:1 contrast (WCAG AA passes).

Color values

HEX	#643A9D
RGB	rgb(100, 58, 157)
HSL	hsl(265, 46%, 42%)
HSV	hsv(265, 63%, 62%)
CMYK	cmyk(36.3%, 63.1%, 0%, 38.4%)
CIE-LAB	lab(34.33, 39.68, -47.28)
CIE-LCH	lch(34.33, 61.73, 310.01°)
OKLab	oklab(45.1% 0.0767 -0.1343)
OKLCH	oklch(45.1% 0.155 299.7)
XYZ	xyz(12.8529, 8.1696, 32.7915)
Luminance	0.0817 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643A9D #739D3A

analogous

#3A419D #643A9D #963A9D

triadic

#643A9D #9D643A #3A9D64

tetradic

#643A9D #9D3A41 #739D3A #3A9D96

square

#643A9D #9D3A41 #739D3A #3A9D96

split-complementary

#643A9D #9D963A #419D3A

monochromatic

#2B1944 #482970 #643A9D #8254C0 #A381D0

Accessibility & contrast

On white

7.97

#643A9D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.63

#643A9D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643A9D

7.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643A9D	#FFFFFF	#000000	##FFFFFF
##643A9D	1.00	7.97	2.63	7.97
#FFFFFF	7.97	1.00	21.00	1.00
#000000	2.63	21.00	1.00	21.00
##FFFFFF	7.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051A0

Deuteranopia (green-blind)

#13509B

Tritanopia (blue-blind)

#584F66

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #643a9d;
/* rgb */ color: rgb(100, 58, 157);
/* oklch */ color: oklch(45.1% 0.155 299.7);

Tailwind

colors: {
  custom: {
    50: '#9472bb',
    500: '#643a9d',
    950: '#000000',
  },
}

SCSS

$custom: #643a9d;
$custom-light: #9472bb;
$custom-dark: #000000;

JSON

{
  "hex": "#643a9d",
  "rgb": {
    "r": 100,
    "g": 58,
    "b": 157
  },
  "hsl": {
    "h": 265.455,
    "s": 46.047,
    "l": 42.157
  },
  "oklch": {
    "l": 0.45098,
    "c": 0.15467,
    "h": 299.7
  },
  "luminance": 0.0817
}

Semantic roles & 50–950 ramp

primary

#643A9D

secondary

#9EBA79

accent

#D6529E

background

#F9F7FB

surface

#F2EDF6

border

#CCC8D0

text

#0E0812

muted

#7E7B81

Preview Lab

Preview with #643A9D

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

Preview Lab → · Contrast checker → · Palette generator →