#643FB4#643FB4

#643FB4 is a mid, vivid violet. Relative luminance 0.096; OKLCH L 47.6% C 0.176 H 293.1°. Best body text is #FFFFFF at 7.21:1 contrast (WCAG AA passes).

Color values

HEX	#643FB4
RGB	rgb(100, 63, 180)
HSL	hsl(259, 48%, 48%)
HSV	hsv(259, 65%, 71%)
CMYK	cmyk(44.4%, 65%, 0%, 29.4%)
CIE-LAB	lab(37.04, 43.19, -56.65)
CIE-LCH	lch(37.04, 71.24, 307.32°)
OKLab	oklab(47.59% 0.0689 -0.1619)
OKLCH	oklch(47.59% 0.176 293.1)
XYZ	xyz(15.2690, 9.5592, 44.2118)
Luminance	0.0956 (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

#643FB4 #8FB43F

analogous

#3F55B4 #643FB4 #9E3FB4

triadic

#643FB4 #B4643F #3FB464

tetradic

#643FB4 #B43F55 #8FB43F #3FB49E

square

#643FB4 #B43F55 #8FB43F #3FB49E

split-complementary

#643FB4 #B49E3F #55B43F

monochromatic

#321F59 #4B2F87 #643FB4 #8667CA #AA94DA

Accessibility & contrast

On white

7.21

#643FB4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.91

#643FB4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643FB4

7.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643FB4	#FFFFFF	#000000	##FFFFFF
##643FB4	1.00	7.21	2.91	7.21
#FFFFFF	7.21	1.00	21.00	1.00
#000000	2.91	21.00	1.00	21.00
##FFFFFF	7.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0059B8

Deuteranopia (green-blind)

#0055B2

Tritanopia (blue-blind)

#4D5B74

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #643fb4;
/* rgb */ color: rgb(100, 63, 180);
/* oklch */ color: oklch(47.6% 0.176 293.1);

Tailwind

colors: {
  custom: {
    50: '#9676cb',
    500: '#643fb4',
    950: '#000000',
  },
}

SCSS

$custom: #643fb4;
$custom-light: #9676cb;
$custom-dark: #000000;

JSON

{
  "hex": "#643fb4",
  "rgb": {
    "r": 100,
    "g": 63,
    "b": 180
  },
  "hsl": {
    "h": 258.974,
    "s": 48.148,
    "l": 47.647
  },
  "oklch": {
    "l": 0.47587,
    "c": 0.17598,
    "h": 293.1
  },
  "luminance": 0.0956
}

Semantic roles & 50–950 ramp

primary

#643FB4

secondary

#B2C58A

accent

#D850AD

background

#F9F7FC

surface

#F2EDF9

border

#CCC8D2

text

#0E0913

muted

#7E7B82

Preview Lab

Preview with #643FB4

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

Preview Lab → · Contrast checker → · Palette generator →