#643FC7#643FC7

#643FC7 is a mid, vivid violet. Relative luminance 0.104; OKLCH L 49.1% C 0.199 H 289.5°. Best body text is #FFFFFF at 6.82:1 contrast (WCAG AA passes).

Color values

HEX	#643FC7
RGB	rgb(100, 63, 199)
HSL	hsl(256, 55%, 51%)
HSV	hsv(256, 68%, 78%)
CMYK	cmyk(49.7%, 68.3%, 0%, 22%)
CIE-LAB	lab(38.53, 48.54, -65.38)
CIE-LCH	lch(38.53, 81.42, 306.59°)
OKLab	oklab(49.12% 0.0664 -0.1875)
OKLCH	oklch(49.12% 0.199 289.5)
XYZ	xyz(17.3389, 10.3871, 55.1131)
Luminance	0.1039 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643FC7 #A2C73F

analogous

#3F5EC7 #643FC7 #A83FC7

triadic

#643FC7 #C7643F #3FC764

tetradic

#643FC7 #C73F5E #A2C73F #3FC7A8

square

#643FC7 #C73F5E #A2C73F #3FC7A8

split-complementary

#643FC7 #C7A83F #5EC73F

monochromatic

#34206C #4B2D9B #643FC7 #8A6ED5 #B19EE3

Accessibility & contrast

On white

6.82

#643FC7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.08

#643FC7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #643FC7

6.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643FC7	#FFFFFF	#000000	##FFFFFF
##643FC7	1.00	6.82	3.08	6.82
#FFFFFF	6.82	1.00	21.00	1.00
#000000	3.08	21.00	1.00	21.00
##FFFFFF	6.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005DCB

Deuteranopia (green-blind)

#0057C4

Tritanopia (blue-blind)

#42617E

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #643fc7;
/* rgb */ color: rgb(100, 63, 199);
/* oklch */ color: oklch(49.1% 0.199 289.5);

Tailwind

colors: {
  custom: {
    50: '#9977d9',
    500: '#643fc7',
    950: '#000000',
  },
}

SCSS

$custom: #643fc7;
$custom-light: #9977d9;
$custom-dark: #000000;

JSON

{
  "hex": "#643fc7",
  "rgb": {
    "r": 100,
    "g": 63,
    "b": 199
  },
  "hsl": {
    "h": 256.324,
    "s": 54.839,
    "l": 51.373
  },
  "oklch": {
    "l": 0.49124,
    "c": 0.19894,
    "h": 289.5
  },
  "luminance": 0.10388
}

Semantic roles & 50–950 ramp

primary

#643FC7

secondary

#BFCF93

accent

#DE4AB6

background

#F9F7FD

surface

#F2EDFB

border

#CCC8D4

text

#0F0915

muted

#7E7B83

Preview Lab

Preview with #643FC7

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

Preview Lab → · Contrast checker → · Palette generator →