#643FB3#643FB3

#643FB3 is a mid, vivid violet. Relative luminance 0.095; OKLCH L 47.5% C 0.175 H 293.3°. Best body text is #FFFFFF at 7.23:1 contrast (WCAG AA passes).

Color values

HEX	#643FB3
RGB	rgb(100, 63, 179)
HSL	hsl(259, 48%, 47%)
HSV	hsv(259, 65%, 70%)
CMYK	cmyk(44.1%, 64.8%, 0%, 29.8%)
CIE-LAB	lab(36.96, 42.91, -56.18)
CIE-LCH	lch(36.96, 70.70, 307.37°)
OKLab	oklab(47.51% 0.0691 -0.1605)
OKLCH	oklch(47.51% 0.175 293.3)
XYZ	xyz(15.1675, 9.5186, 43.6772)
Luminance	0.0952 (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

#643FB3 #8EB33F

analogous

#3F54B3 #643FB3 #9E3FB3

triadic

#643FB3 #B3643F #3FB364

tetradic

#643FB3 #B33F54 #8EB33F #3FB39E

square

#643FB3 #B33F54 #8EB33F #3FB39E

split-complementary

#643FB3 #B39E3F #54B33F

monochromatic

#311F58 #4B2F86 #643FB3 #8666C9 #AA93D9

Accessibility & contrast

On white

7.23

#643FB3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.90

#643FB3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643FB3

7.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643FB3	#FFFFFF	#000000	##FFFFFF
##643FB3	1.00	7.23	2.90	7.23
#FFFFFF	7.23	1.00	21.00	1.00
#000000	2.90	21.00	1.00	21.00
##FFFFFF	7.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058B7

Deuteranopia (green-blind)

#0055B1

Tritanopia (blue-blind)

#4E5A73

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #643fb3;
/* rgb */ color: rgb(100, 63, 179);
/* oklch */ color: oklch(47.5% 0.175 293.3);

Tailwind

colors: {
  custom: {
    50: '#9676cb',
    500: '#643fb3',
    950: '#000000',
  },
}

SCSS

$custom: #643fb3;
$custom-light: #9676cb;
$custom-dark: #000000;

JSON

{
  "hex": "#643fb3",
  "rgb": {
    "r": 100,
    "g": 63,
    "b": 179
  },
  "hsl": {
    "h": 259.138,
    "s": 47.934,
    "l": 47.451
  },
  "oklch": {
    "l": 0.47509,
    "c": 0.17475,
    "h": 293.3
  },
  "luminance": 0.09519
}

Semantic roles & 50–950 ramp

primary

#643FB3

secondary

#B2C489

accent

#D850AC

background

#F9F7FC

surface

#F2EDF9

border

#CCC8D2

text

#0E0913

muted

#7E7B82

Preview Lab

Preview with #643FB3

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

Preview Lab → · Contrast checker → · Palette generator →