#643D99#643D99

#643D99 is a mid, vivid violet. Relative luminance 0.083; OKLCH L 45.3% C 0.145 H 300.2°. Best body text is #FFFFFF at 7.87:1 contrast (WCAG AA passes).

Color values

HEX	#643D99
RGB	rgb(100, 61, 153)
HSL	hsl(265, 43%, 42%)
HSV	hsv(265, 60%, 60%)
CMYK	cmyk(34.6%, 60.1%, 0%, 40%)
CIE-LAB	lab(34.69, 36.92, -44.27)
CIE-LCH	lch(34.69, 57.65, 309.83°)
OKLab	oklab(45.27% 0.0731 -0.1255)
OKLCH	oklch(45.27% 0.145 300.2)
XYZ	xyz(12.6727, 8.3466, 31.0742)
Luminance	0.0835 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643D99 #72993D

analogous

#3D4499 #643D99 #923D99

triadic

#643D99 #99643D #3D9964

tetradic

#643D99 #993D44 #72993D #3D9992

square

#643D99 #993D44 #72993D #3D9992

split-complementary

#643D99 #99923D #44993D

monochromatic

#2B1A41 #472C6D #643D99 #8257BC #A383CE

Accessibility & contrast

On white

7.87

#643D99 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.67

#643D99 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643D99

7.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643D99	#FFFFFF	#000000	##FFFFFF
##643D99	1.00	7.87	2.67	7.87
#FFFFFF	7.87	1.00	21.00	1.00
#000000	2.67	21.00	1.00	21.00
##FFFFFF	7.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0B519C

Deuteranopia (green-blind)

#205197

Tritanopia (blue-blind)

#595065

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #643d99;
/* rgb */ color: rgb(100, 61, 153);
/* oklch */ color: oklch(45.3% 0.145 300.2);

Tailwind

colors: {
  custom: {
    50: '#9474b8',
    500: '#643d99',
    950: '#000000',
  },
}

SCSS

$custom: #643d99;
$custom-light: #9474b8;
$custom-dark: #000000;

JSON

{
  "hex": "#643d99",
  "rgb": {
    "r": 100,
    "g": 61,
    "b": 153
  },
  "hsl": {
    "h": 265.435,
    "s": 42.991,
    "l": 41.961
  },
  "oklch": {
    "l": 0.45273,
    "c": 0.14523,
    "h": 300.2
  },
  "luminance": 0.08347
}

Semantic roles & 50–950 ramp

primary

#643D99

secondary

#9EB87A

accent

#D3559D

background

#F9F7FB

surface

#F2EDF6

border

#CCC8D0

text

#0D0811

muted

#7E7B80

Preview Lab

Preview with #643D99

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

Preview Lab → · Contrast checker → · Palette generator →