#643D97#643D97

#643D97 is a mid, vivid violet. Relative luminance 0.083; OKLCH L 45.1% C 0.143 H 300.8°. Best body text is #FFFFFF at 7.91:1 contrast (WCAG AA passes).

Color values

HEX	#643D97
RGB	rgb(100, 61, 151)
HSL	hsl(266, 42%, 42%)
HSV	hsv(266, 60%, 59%)
CMYK	cmyk(33.8%, 59.6%, 0%, 40.8%)
CIE-LAB	lab(34.56, 36.39, -43.27)
CIE-LCH	lch(34.56, 56.54, 310.06°)
OKLab	oklab(45.13% 0.0731 -0.1226)
OKLCH	oklch(45.13% 0.143 300.8)
XYZ	xyz(12.5089, 8.2811, 30.2116)
Luminance	0.0828 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643D97 #70973D

analogous

#3D4397 #643D97 #913D97

triadic

#643D97 #97643D #3D9764

tetradic

#643D97 #973D43 #70973D #3D9791

square

#643D97 #973D43 #70973D #3D9791

split-complementary

#643D97 #97913D #43973D

monochromatic

#2A1A40 #472B6B #643D97 #8256BB #A282CC

Accessibility & contrast

On white

7.91

#643D97 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.66

#643D97 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643D97

7.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643D97	#FFFFFF	#000000	##FFFFFF
##643D97	1.00	7.91	2.66	7.91
#FFFFFF	7.91	1.00	21.00	1.00
#000000	2.66	21.00	1.00	21.00
##FFFFFF	7.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#10519A

Deuteranopia (green-blind)

#235195

Tritanopia (blue-blind)

#5A4F64

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #643d97;
/* rgb */ color: rgb(100, 61, 151);
/* oklch */ color: oklch(45.1% 0.143 300.8);

Tailwind

colors: {
  custom: {
    50: '#9474b6',
    500: '#643d97',
    950: '#000000',
  },
}

SCSS

$custom: #643d97;
$custom-light: #9474b6;
$custom-dark: #000000;

JSON

{
  "hex": "#643d97",
  "rgb": {
    "r": 100,
    "g": 61,
    "b": 151
  },
  "hsl": {
    "h": 266,
    "s": 42.453,
    "l": 41.569
  },
  "oklch": {
    "l": 0.45133,
    "c": 0.1427,
    "h": 300.8
  },
  "luminance": 0.08281
}

Semantic roles & 50–950 ramp

primary

#643D97

secondary

#9CB779

accent

#D2569C

background

#F9F7FB

surface

#F2EDF6

border

#CCC8D0

text

#0D0811

muted

#7E7B80

Preview Lab

Preview with #643D97

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

Preview Lab → · Contrast checker → · Palette generator →