#643AA4#643AA4

#643AA4 is a mid, vivid violet. Relative luminance 0.084; OKLCH L 45.6% C 0.163 H 297.8°. Best body text is #FFFFFF at 7.83:1 contrast (WCAG AA passes).

Color values

HEX	#643AA4
RGB	rgb(100, 58, 164)
HSL	hsl(264, 48%, 44%)
HSV	hsv(264, 65%, 64%)
CMYK	cmyk(39%, 64.6%, 0%, 35.7%)
CIE-LAB	lab(34.83, 41.56, -50.69)
CIE-LCH	lch(34.83, 65.55, 309.35°)
OKLab	oklab(45.62% 0.0761 -0.1444)
OKLCH	oklch(45.62% 0.163 297.8)
XYZ	xyz(13.4677, 8.4156, 36.0296)
Luminance	0.0842 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643AA4 #7AA43A

analogous

#3A45A4 #643AA4 #993AA4

triadic

#643AA4 #A4643A #3AA464

tetradic

#643AA4 #A43A45 #7AA43A #3AA499

square

#643AA4 #A43A45 #7AA43A #3AA499

split-complementary

#643AA4 #A4993A #45A43A

monochromatic

#2D1A4A #482A77 #643AA4 #8257C4 #A485D4

Accessibility & contrast

On white

7.83

#643AA4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.68

#643AA4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643AA4

7.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643AA4	#FFFFFF	#000000	##FFFFFF
##643AA4	1.00	7.83	2.68	7.83
#FFFFFF	7.83	1.00	21.00	1.00
#000000	2.68	21.00	1.00	21.00
##FFFFFF	7.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052A7

Deuteranopia (green-blind)

#0051A2

Tritanopia (blue-blind)

#555269

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #643aa4;
/* rgb */ color: rgb(100, 58, 164);
/* oklch */ color: oklch(45.6% 0.163 297.8);

Tailwind

colors: {
  custom: {
    50: '#9573c0',
    500: '#643aa4',
    950: '#000000',
  },
}

SCSS

$custom: #643aa4;
$custom-light: #9573c0;
$custom-dark: #000000;

JSON

{
  "hex": "#643aa4",
  "rgb": {
    "r": 100,
    "g": 58,
    "b": 164
  },
  "hsl": {
    "h": 263.774,
    "s": 47.748,
    "l": 43.529
  },
  "oklch": {
    "l": 0.45619,
    "c": 0.16321,
    "h": 297.8
  },
  "luminance": 0.08416
}

Semantic roles & 50–950 ramp

primary

#643AA4

secondary

#A4BE7C

accent

#D750A2

background

#F9F7FB

surface

#F2EDF7

border

#CCC8D0

text

#0E0812

muted

#7E7B81

Preview Lab

Preview with #643AA4

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

Preview Lab → · Contrast checker → · Palette generator →