#643C9F#643C9F

#643C9F is a mid, vivid violet. Relative luminance 0.084; OKLCH L 45.5% C 0.154 H 298.7°. Best body text is #FFFFFF at 7.81:1 contrast (WCAG AA passes).

Color values

HEX	#643C9F
RGB	rgb(100, 60, 159)
HSL	hsl(264, 45%, 43%)
HSV	hsv(264, 62%, 62%)
CMYK	cmyk(37.1%, 62.3%, 0%, 37.6%)
CIE-LAB	lab(34.89, 39.10, -47.59)
CIE-LCH	lch(34.89, 61.59, 309.41°)
OKLab	oklab(45.55% 0.0741 -0.1352)
OKLCH	oklch(45.55% 0.154 298.7)
XYZ	xyz(13.1278, 8.4441, 33.7324)
Luminance	0.0844 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643C9F #779F3C

analogous

#3C469F #643C9F #953C9F

triadic

#643C9F #9F643C #3C9F64

tetradic

#643C9F #9F3C46 #779F3C #3C9F95

square

#643C9F #9F3C46 #779F3C #3C9F95

split-complementary

#643C9F #9F953C #469F3C

monochromatic

#2C1A46 #482B73 #643C9F #8258C0 #A385D1

Accessibility & contrast

On white

7.81

#643C9F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.69

#643C9F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643C9F

7.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643C9F	#FFFFFF	#000000	##FFFFFF
##643C9F	1.00	7.81	2.69	7.81
#FFFFFF	7.81	1.00	21.00	1.00
#000000	2.69	21.00	1.00	21.00
##FFFFFF	7.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052A2

Deuteranopia (green-blind)

#13519D

Tritanopia (blue-blind)

#575168

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #643c9f;
/* rgb */ color: rgb(100, 60, 159);
/* oklch */ color: oklch(45.5% 0.154 298.7);

Tailwind

colors: {
  custom: {
    50: '#9474bc',
    500: '#643c9f',
    950: '#000000',
  },
}

SCSS

$custom: #643c9f;
$custom-light: #9474bc;
$custom-dark: #000000;

JSON

{
  "hex": "#643c9f",
  "rgb": {
    "r": 100,
    "g": 60,
    "b": 159
  },
  "hsl": {
    "h": 264.242,
    "s": 45.205,
    "l": 42.941
  },
  "oklch": {
    "l": 0.45547,
    "c": 0.15422,
    "h": 298.7
  },
  "luminance": 0.08444
}

Semantic roles & 50–950 ramp

primary

#643C9F

secondary

#A1BB7C

accent

#D553A0

background

#F9F7FB

surface

#F2EDF6

border

#CCC8D0

text

#0E0812

muted

#7E7B81

Preview Lab

Preview with #643C9F

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

Preview Lab → · Contrast checker → · Palette generator →