#643EB3#643EB3

#643EB3 is a mid, vivid violet. Relative luminance 0.094; OKLCH L 47.4% C 0.176 H 293.5°. Best body text is #FFFFFF at 7.29:1 contrast (WCAG AA passes).

Color values

HEX	#643EB3
RGB	rgb(100, 62, 179)
HSL	hsl(259, 49%, 47%)
HSV	hsv(259, 65%, 70%)
CMYK	cmyk(44.1%, 65.4%, 0%, 29.8%)
CIE-LAB	lab(36.76, 43.46, -56.52)
CIE-LCH	lch(36.76, 71.30, 307.56°)
OKLab	oklab(47.36% 0.0701 -0.1615)
OKLCH	oklch(47.36% 0.176 293.5)
XYZ	xyz(15.1126, 9.4088, 43.6589)
Luminance	0.0941 (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

#643EB3 #8DB33E

analogous

#3E53B3 #643EB3 #9F3EB3

triadic

#643EB3 #B3643E #3EB364

tetradic

#643EB3 #B33E53 #8DB33E #3EB39F

square

#643EB3 #B33E53 #8DB33E #3EB39F

split-complementary

#643EB3 #B39F3E #53B33E

monochromatic

#311F58 #4B2E86 #643EB3 #8565CA #A992D9

Accessibility & contrast

On white

7.29

#643EB3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.88

#643EB3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643EB3

7.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643EB3	#FFFFFF	#000000	##FFFFFF
##643EB3	1.00	7.29	2.88	7.29
#FFFFFF	7.29	1.00	21.00	1.00
#000000	2.88	21.00	1.00	21.00
##FFFFFF	7.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058B7

Deuteranopia (green-blind)

#0054B1

Tritanopia (blue-blind)

#4E5A73

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #643eb3;
/* rgb */ color: rgb(100, 62, 179);
/* oklch */ color: oklch(47.4% 0.176 293.5);

Tailwind

colors: {
  custom: {
    50: '#9676cb',
    500: '#643eb3',
    950: '#000000',
  },
}

SCSS

$custom: #643eb3;
$custom-light: #9676cb;
$custom-dark: #000000;

JSON

{
  "hex": "#643eb3",
  "rgb": {
    "r": 100,
    "g": 62,
    "b": 179
  },
  "hsl": {
    "h": 259.487,
    "s": 48.548,
    "l": 47.255
  },
  "oklch": {
    "l": 0.47362,
    "c": 0.17608,
    "h": 293.5
  },
  "luminance": 0.09409
}

Semantic roles & 50–950 ramp

primary

#643EB3

secondary

#B1C588

accent

#D850AC

background

#F9F7FC

surface

#F2EDF9

border

#CCC8D2

text

#0E0813

muted

#7E7B82

Preview Lab

Preview with #643EB3

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

Preview Lab → · Contrast checker → · Palette generator →