#643BA1#643BA1

#643BA1 is a mid, vivid violet. Relative luminance 0.084; OKLCH L 45.5% C 0.158 H 298.4°. Best body text is #FFFFFF at 7.83:1 contrast (WCAG AA passes).

Color values

HEX	#643BA1
RGB	rgb(100, 59, 161)
HSL	hsl(264, 46%, 43%)
HSV	hsv(264, 63%, 63%)
CMYK	cmyk(37.9%, 63.4%, 0%, 36.9%)
CIE-LAB	lab(34.82, 40.20, -48.90)
CIE-LCH	lch(34.82, 63.30, 309.42°)
OKLab	oklab(45.54% 0.0752 -0.1391)
OKLCH	oklch(45.54% 0.158 298.4)
XYZ	xyz(13.2509, 8.4103, 34.6365)
Luminance	0.0841 (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

#643BA1 #78A13B

analogous

#3B45A1 #643BA1 #973BA1

triadic

#643BA1 #A1643B #3BA164

tetradic

#643BA1 #A13B45 #78A13B #3BA197

square

#643BA1 #A13B45 #78A13B #3BA197

split-complementary

#643BA1 #A1973B #45A13B

monochromatic

#2C1A47 #482B74 #643BA1 #8258C2 #A484D2

Accessibility & contrast

On white

7.83

#643BA1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.68

#643BA1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643BA1

7.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643BA1	#FFFFFF	#000000	##FFFFFF
##643BA1	1.00	7.83	2.68	7.83
#FFFFFF	7.83	1.00	21.00	1.00
#000000	2.68	21.00	1.00	21.00
##FFFFFF	7.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052A4

Deuteranopia (green-blind)

#0B519F

Tritanopia (blue-blind)

#565168

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #643ba1;
/* rgb */ color: rgb(100, 59, 161);
/* oklch */ color: oklch(45.5% 0.158 298.4);

Tailwind

colors: {
  custom: {
    50: '#9573bd',
    500: '#643ba1',
    950: '#000000',
  },
}

SCSS

$custom: #643ba1;
$custom-light: #9573bd;
$custom-dark: #000000;

JSON

{
  "hex": "#643ba1",
  "rgb": {
    "r": 100,
    "g": 59,
    "b": 161
  },
  "hsl": {
    "h": 264.118,
    "s": 46.364,
    "l": 43.137
  },
  "oklch": {
    "l": 0.45543,
    "c": 0.15813,
    "h": 298.4
  },
  "luminance": 0.0841
}

Semantic roles & 50–950 ramp

primary

#643BA1

secondary

#A2BC7C

accent

#D652A1

background

#F9F7FB

surface

#F2EDF7

border

#CCC8D0

text

#0E0812

muted

#7E7B81

Preview Lab

Preview with #643BA1

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

Preview Lab → · Contrast checker → · Palette generator →