#643FC6#643FC6

#643FC6 is a mid, vivid violet. Relative luminance 0.103; OKLCH L 49.0% C 0.198 H 289.7°. Best body text is #FFFFFF at 6.84:1 contrast (WCAG AA passes).

Color values

HEX	#643FC6
RGB	rgb(100, 63, 198)
HSL	hsl(256, 54%, 51%)
HSV	hsv(256, 68%, 78%)
CMYK	cmyk(49.5%, 68.2%, 0%, 22.4%)
CIE-LAB	lab(38.45, 48.25, -64.93)
CIE-LCH	lch(38.45, 80.89, 306.62°)
OKLab	oklab(49.04% 0.0665 -0.1862)
OKLCH	oklch(49.04% 0.198 289.7)
XYZ	xyz(17.2231, 10.3408, 54.5036)
Luminance	0.1034 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Bluey Purple

#6241C7

ΔE00 0.62

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643FC6 #A1C63F

analogous

#3F5DC6 #643FC6 #A73FC6

triadic

#643FC6 #C6643F #3FC664

tetradic

#643FC6 #C63F5D #A1C63F #3FC6A7

square

#643FC6 #C63F5D #A1C63F #3FC6A7

split-complementary

#643FC6 #C6A73F #5DC63F

monochromatic

#34206B #4B2E9A #643FC6 #8A6ED4 #B09DE2

Accessibility & contrast

On white

6.84

#643FC6 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.07

#643FC6 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #643FC6

6.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643FC6	#FFFFFF	#000000	##FFFFFF
##643FC6	1.00	6.84	3.07	6.84
#FFFFFF	6.84	1.00	21.00	1.00
#000000	3.07	21.00	1.00	21.00
##FFFFFF	6.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005DCA

Deuteranopia (green-blind)

#0057C3

Tritanopia (blue-blind)

#42617D

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #643fc6;
/* rgb */ color: rgb(100, 63, 198);
/* oklch */ color: oklch(49.0% 0.198 289.7);

Tailwind

colors: {
  custom: {
    50: '#9977d8',
    500: '#643fc6',
    950: '#000000',
  },
}

SCSS

$custom: #643fc6;
$custom-light: #9977d8;
$custom-dark: #000000;

JSON

{
  "hex": "#643fc6",
  "rgb": {
    "r": 100,
    "g": 63,
    "b": 198
  },
  "hsl": {
    "h": 256.444,
    "s": 54.217,
    "l": 51.176
  },
  "oklch": {
    "l": 0.4904,
    "c": 0.19775,
    "h": 289.7
  },
  "luminance": 0.10342
}

Semantic roles & 50–950 ramp

primary

#643FC6

secondary

#BECE93

accent

#DE4AB5

background

#F9F7FD

surface

#F2EDFB

border

#CCC8D4

text

#0F0915

muted

#7E7B83

Preview Lab

Preview with #643FC6

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

Preview Lab → · Contrast checker → · Palette generator →