#643BA4#643BA4

#643BA4 is a mid, vivid violet. Relative luminance 0.085; OKLCH L 45.8% C 0.162 H 297.6°. Best body text is #FFFFFF at 7.77:1 contrast (WCAG AA passes).

Color values

HEX	#643BA4
RGB	rgb(100, 59, 164)
HSL	hsl(263, 47%, 44%)
HSV	hsv(263, 64%, 64%)
CMYK	cmyk(39%, 64%, 0%, 35.7%)
CIE-LAB	lab(35.04, 41.01, -50.36)
CIE-LCH	lch(35.04, 64.94, 309.15°)
OKLab	oklab(45.77% 0.075 -0.1434)
OKLCH	oklch(45.77% 0.162 297.6)
XYZ	xyz(13.5186, 8.5174, 36.0465)
Luminance	0.0852 (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

#643BA4 #7BA43B

analogous

#3B46A4 #643BA4 #983BA4

triadic

#643BA4 #A4643B #3BA464

tetradic

#643BA4 #A43B46 #7BA43B #3BA498

square

#643BA4 #A43B46 #7BA43B #3BA498

split-complementary

#643BA4 #A4983B #46A43B

monochromatic

#2D1B4A #492B77 #643BA4 #8259C3 #A486D3

Accessibility & contrast

On white

7.77

#643BA4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.70

#643BA4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643BA4

7.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643BA4	#FFFFFF	#000000	##FFFFFF
##643BA4	1.00	7.77	2.70	7.77
#FFFFFF	7.77	1.00	21.00	1.00
#000000	2.70	21.00	1.00	21.00
##FFFFFF	7.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053A7

Deuteranopia (green-blind)

#0051A2

Tritanopia (blue-blind)

#55536A

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #643ba4;
/* rgb */ color: rgb(100, 59, 164);
/* oklch */ color: oklch(45.8% 0.162 297.6);

Tailwind

colors: {
  custom: {
    50: '#9573c0',
    500: '#643ba4',
    950: '#000000',
  },
}

SCSS

$custom: #643ba4;
$custom-light: #9573c0;
$custom-dark: #000000;

JSON

{
  "hex": "#643ba4",
  "rgb": {
    "r": 100,
    "g": 59,
    "b": 164
  },
  "hsl": {
    "h": 263.429,
    "s": 47.085,
    "l": 43.725
  },
  "oklch": {
    "l": 0.45767,
    "c": 0.16181,
    "h": 297.6
  },
  "luminance": 0.08518
}

Semantic roles & 50–950 ramp

primary

#643BA4

secondary

#A4BE7D

accent

#D751A3

background

#F9F7FB

surface

#F2EDF7

border

#CCC8D0

text

#0E0812

muted

#7E7B81

Preview Lab

Preview with #643BA4

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

Preview Lab → · Contrast checker → · Palette generator →