#643FC5#643FC5

#643FC5 is a mid, vivid violet. Relative luminance 0.103; OKLCH L 49.0% C 0.197 H 289.8°. Best body text is #FFFFFF at 6.86:1 contrast (WCAG AA passes).

Color values

HEX	#643FC5
RGB	rgb(100, 63, 197)
HSL	hsl(257, 54%, 51%)
HSV	hsv(257, 68%, 77%)
CMYK	cmyk(49.2%, 68%, 0%, 22.7%)
CIE-LAB	lab(38.37, 47.97, -64.47)
CIE-LCH	lch(38.37, 80.36, 306.65°)
OKLab	oklab(48.96% 0.0667 -0.1849)
OKLCH	oklch(48.96% 0.197 289.8)
XYZ	xyz(17.1082, 10.2949, 53.8982)
Luminance	0.1030 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Bluey Purple

#6241C7

ΔE00 0.68

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643FC5 #A0C53F

analogous

#3F5DC5 #643FC5 #A73FC5

triadic

#643FC5 #C5643F #3FC564

tetradic

#643FC5 #C53F5D #A0C53F #3FC5A7

square

#643FC5 #C53F5D #A0C53F #3FC5A7

split-complementary

#643FC5 #C5A73F #5DC53F

monochromatic

#34206A #4C2E99 #643FC5 #8A6ED3 #B09DE1

Accessibility & contrast

On white

6.86

#643FC5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.06

#643FC5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #643FC5

6.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643FC5	#FFFFFF	#000000	##FFFFFF
##643FC5	1.00	6.86	3.06	6.86
#FFFFFF	6.86	1.00	21.00	1.00
#000000	3.06	21.00	1.00	21.00
##FFFFFF	6.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005DC9

Deuteranopia (green-blind)

#0057C2

Tritanopia (blue-blind)

#43617D

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #643fc5;
/* rgb */ color: rgb(100, 63, 197);
/* oklch */ color: oklch(49.0% 0.197 289.8);

Tailwind

colors: {
  custom: {
    50: '#9977d8',
    500: '#643fc5',
    950: '#000000',
  },
}

SCSS

$custom: #643fc5;
$custom-light: #9977d8;
$custom-dark: #000000;

JSON

{
  "hex": "#643fc5",
  "rgb": {
    "r": 100,
    "g": 63,
    "b": 197
  },
  "hsl": {
    "h": 256.567,
    "s": 53.6,
    "l": 50.98
  },
  "oklch": {
    "l": 0.48957,
    "c": 0.19656,
    "h": 289.8
  },
  "luminance": 0.10296
}

Semantic roles & 50–950 ramp

primary

#643FC5

secondary

#BDCE92

accent

#DD4BB5

background

#F9F7FD

surface

#F2EDFA

border

#CCC8D3

text

#0F0915

muted

#7E7B83

Preview Lab

Preview with #643FC5

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

Preview Lab → · Contrast checker → · Palette generator →