#643CA4#643CA4

#643CA4 is a mid, vivid violet. Relative luminance 0.086; OKLCH L 45.9% C 0.160 H 297.4°. Best body text is #FFFFFF at 7.71:1 contrast (WCAG AA passes).

Color values

HEX	#643CA4
RGB	rgb(100, 60, 164)
HSL	hsl(263, 46%, 44%)
HSV	hsv(263, 63%, 64%)
CMYK	cmyk(39%, 63.4%, 0%, 35.7%)
CIE-LAB	lab(35.24, 40.45, -50.03)
CIE-LCH	lch(35.24, 64.33, 308.96°)
OKLab	oklab(45.92% 0.0738 -0.1424)
OKLCH	oklch(45.92% 0.16 297.4)
XYZ	xyz(13.5705, 8.6212, 36.0638)
Luminance	0.0862 (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

#643CA4 #7CA43C

analogous

#3C48A4 #643CA4 #983CA4

triadic

#643CA4 #A4643C #3CA464

tetradic

#643CA4 #A43C48 #7CA43C #3CA498

square

#643CA4 #A43C48 #7CA43C #3CA498

split-complementary

#643CA4 #A4983C #48A43C

monochromatic

#2D1B4A #492C77 #643CA4 #835AC3 #A487D3

Accessibility & contrast

On white

7.71

#643CA4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.72

#643CA4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643CA4

7.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643CA4	#FFFFFF	#000000	##FFFFFF
##643CA4	1.00	7.71	2.72	7.71
#FFFFFF	7.71	1.00	21.00	1.00
#000000	2.72	21.00	1.00	21.00
##FFFFFF	7.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053A7

Deuteranopia (green-blind)

#0452A2

Tritanopia (blue-blind)

#55536A

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #643ca4;
/* rgb */ color: rgb(100, 60, 164);
/* oklch */ color: oklch(45.9% 0.160 297.4);

Tailwind

colors: {
  custom: {
    50: '#9574c0',
    500: '#643ca4',
    950: '#000000',
  },
}

SCSS

$custom: #643ca4;
$custom-light: #9574c0;
$custom-dark: #000000;

JSON

{
  "hex": "#643ca4",
  "rgb": {
    "r": 100,
    "g": 60,
    "b": 164
  },
  "hsl": {
    "h": 263.077,
    "s": 46.429,
    "l": 43.922
  },
  "oklch": {
    "l": 0.45916,
    "c": 0.1604,
    "h": 297.4
  },
  "luminance": 0.08621
}

Semantic roles & 50–950 ramp

primary

#643CA4

secondary

#A5BD7E

accent

#D652A3

background

#F9F7FB

surface

#F2EDF7

border

#CCC8D0

text

#0E0812

muted

#7E7B81

Preview Lab

Preview with #643CA4

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

Preview Lab → · Contrast checker → · Palette generator →