#643D9F#643D9F

#643D9F is a mid, vivid violet. Relative luminance 0.086; OKLCH L 45.7% C 0.153 H 298.5°. Best body text is #FFFFFF at 7.75:1 contrast (WCAG AA passes).

Color values

HEX	#643D9F
RGB	rgb(100, 61, 159)
HSL	hsl(264, 45%, 43%)
HSV	hsv(264, 62%, 62%)
CMYK	cmyk(37.1%, 61.6%, 0%, 37.6%)
CIE-LAB	lab(35.10, 38.53, -47.24)
CIE-LCH	lch(35.10, 60.97, 309.20°)
OKLab	oklab(45.7% 0.0729 -0.1342)
OKLCH	oklch(45.7% 0.153 298.5)
XYZ	xyz(13.1807, 8.5499, 33.7500)
Luminance	0.0855 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643D9F #789F3D

analogous

#3D479F #643D9F #953D9F

triadic

#643D9F #9F643D #3D9F64

tetradic

#643D9F #9F3D47 #789F3D #3D9F95

square

#643D9F #9F3D47 #789F3D #3D9F95

split-complementary

#643D9F #9F953D #479F3D

monochromatic

#2C1B47 #482C73 #643D9F #825AC0 #A486D1

Accessibility & contrast

On white

7.75

#643D9F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.71

#643D9F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643D9F

7.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643D9F	#FFFFFF	#000000	##FFFFFF
##643D9F	1.00	7.75	2.71	7.75
#FFFFFF	7.75	1.00	21.00	1.00
#000000	2.71	21.00	1.00	21.00
##FFFFFF	7.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053A2

Deuteranopia (green-blind)

#16529D

Tritanopia (blue-blind)

#575268

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #643d9f;
/* rgb */ color: rgb(100, 61, 159);
/* oklch */ color: oklch(45.7% 0.153 298.5);

Tailwind

colors: {
  custom: {
    50: '#9474bc',
    500: '#643d9f',
    950: '#000000',
  },
}

SCSS

$custom: #643d9f;
$custom-light: #9474bc;
$custom-dark: #000000;

JSON

{
  "hex": "#643d9f",
  "rgb": {
    "r": 100,
    "g": 61,
    "b": 159
  },
  "hsl": {
    "h": 263.878,
    "s": 44.545,
    "l": 43.137
  },
  "oklch": {
    "l": 0.45701,
    "c": 0.15274,
    "h": 298.5
  },
  "luminance": 0.0855
}

Semantic roles & 50–950 ramp

primary

#643D9F

secondary

#A2BB7D

accent

#D454A1

background

#F9F7FB

surface

#F2EDF6

border

#CCC8D0

text

#0E0812

muted

#7E7B81

Preview Lab

Preview with #643D9F

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

Preview Lab → · Contrast checker → · Palette generator →