#643FCC#643FCC

#643FCC is a mid, highly saturated violet. Relative luminance 0.106; OKLCH L 49.5% C 0.205 H 288.6°. Best body text is #FFFFFF at 6.72:1 contrast (WCAG AA passes).

Color values

HEX	#643FCC
RGB	rgb(100, 63, 204)
HSL	hsl(256, 58%, 52%)
HSV	hsv(256, 69%, 80%)
CMYK	cmyk(51%, 69.1%, 0%, 20%)
CIE-LAB	lab(38.94, 49.95, -67.61)
CIE-LCH	lch(38.94, 84.06, 306.46°)
OKLab	oklab(49.54% 0.0655 -0.1941)
OKLCH	oklch(49.54% 0.205 288.6)
XYZ	xyz(17.9289, 10.6232, 58.2208)
Luminance	0.1062 (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

#643FCC #A7CC3F

analogous

#3F60CC #643FCC #AB3FCC

triadic

#643FCC #CC643F #3FCC64

tetradic

#643FCC #CC3F60 #A7CC3F #3FCCAB

square

#643FCC #CC3F60 #A7CC3F #3FCCAB

split-complementary

#643FCC #CCAB3F #60CC3F

monochromatic

#341E72 #4B2BA3 #643FCC #8B6FD9 #B2A0E6

Accessibility & contrast

On white

6.72

#643FCC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.12

#643FCC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #643FCC

6.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643FCC	#FFFFFF	#000000	##FFFFFF
##643FCC	1.00	6.72	3.12	6.72
#FFFFFF	6.72	1.00	21.00	1.00
#000000	3.12	21.00	1.00	21.00
##FFFFFF	6.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005FD0

Deuteranopia (green-blind)

#0058C9

Tritanopia (blue-blind)

#3E6381

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #643fcc;
/* rgb */ color: rgb(100, 63, 204);
/* oklch */ color: oklch(49.5% 0.205 288.6);

Tailwind

colors: {
  custom: {
    50: '#9977dd',
    500: '#643fcc',
    950: '#000000',
  },
}

SCSS

$custom: #643fcc;
$custom-light: #9977dd;
$custom-dark: #000000;

JSON

{
  "hex": "#643fcc",
  "rgb": {
    "r": 100,
    "g": 63,
    "b": 204
  },
  "hsl": {
    "h": 255.745,
    "s": 58.025,
    "l": 52.353
  },
  "oklch": {
    "l": 0.49544,
    "c": 0.20487,
    "h": 288.6
  },
  "luminance": 0.10624
}

Semantic roles & 50–950 ramp

primary

#643FCC

secondary

#C2D295

accent

#E147B9

background

#FAF7FD

surface

#F3EDFB

border

#CDC8D4

text

#0F0915

muted

#7F7B83

Preview Lab

Preview with #643FCC

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

Preview Lab → · Contrast checker → · Palette generator →