#643E9A#643E9A

#643E9A is a mid, vivid violet. Relative luminance 0.085; OKLCH L 45.5% C 0.145 H 299.7°. Best body text is #FFFFFF at 7.78:1 contrast (WCAG AA passes).

Color values

HEX	#643E9A
RGB	rgb(100, 62, 154)
HSL	hsl(265, 43%, 42%)
HSV	hsv(265, 60%, 60%)
CMYK	cmyk(35.1%, 59.7%, 0%, 39.6%)
CIE-LAB	lab(34.98, 36.62, -44.42)
CIE-LCH	lch(34.98, 57.57, 309.50°)
OKLab	oklab(45.5% 0.0718 -0.1259)
OKLCH	oklch(45.5% 0.145 299.7)
XYZ	xyz(12.8095, 8.4876, 31.5290)
Luminance	0.0849 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643E9A #749A3E

analogous

#3E469A #643E9A #923E9A

triadic

#643E9A #9A643E #3E9A64

tetradic

#643E9A #9A3E46 #749A3E #3E9A92

square

#643E9A #9A3E46 #749A3E #3E9A92

split-complementary

#643E9A #9A923E #469A3E

monochromatic

#2B1B43 #482C6E #643E9A #8259BC #A385CE

Accessibility & contrast

On white

7.78

#643E9A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.70

#643E9A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643E9A

7.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643E9A	#FFFFFF	#000000	##FFFFFF
##643E9A	1.00	7.78	2.70	7.78
#FFFFFF	7.78	1.00	21.00	1.00
#000000	2.70	21.00	1.00	21.00
##FFFFFF	7.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0D529D

Deuteranopia (green-blind)

#205298

Tritanopia (blue-blind)

#585166

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #643e9a;
/* rgb */ color: rgb(100, 62, 154);
/* oklch */ color: oklch(45.5% 0.145 299.7);

Tailwind

colors: {
  custom: {
    50: '#9475b8',
    500: '#643e9a',
    950: '#000000',
  },
}

SCSS

$custom: #643e9a;
$custom-light: #9475b8;
$custom-dark: #000000;

JSON

{
  "hex": "#643e9a",
  "rgb": {
    "r": 100,
    "g": 62,
    "b": 154
  },
  "hsl": {
    "h": 264.783,
    "s": 42.593,
    "l": 42.353
  },
  "oklch": {
    "l": 0.45502,
    "c": 0.14496,
    "h": 299.7
  },
  "luminance": 0.08488
}

Semantic roles & 50–950 ramp

primary

#643E9A

secondary

#9FB87C

accent

#D2559F

background

#F9F7FB

surface

#F2EDF6

border

#CCC8D0

text

#0D0811

muted

#7E7B80

Preview Lab

Preview with #643E9A

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

Preview Lab → · Contrast checker → · Palette generator →