#703A5A

CSS

:root {
  --passionate-plum: #703a5a;
  --passionate-plum-rgb: 112 58 90;
  --passionate-plum-oklch: oklch(0.427 0.087 344.9);
}

.element {
  color: var(--passionate-plum);
  background-color: hsl(324 32% 33%);
  border-color: oklch(0.427 0.087 344.9);
}

Tailwind CSS v4

@theme {
  --color-passionate-plum: #703a5a;
  --color-passionate-plum-50: #ffecfa;
  --color-passionate-plum-100: #ffddee;
  --color-passionate-plum-200: #f1c6db;
  --color-passionate-plum-300: #d9a6c0;
  --color-passionate-plum-400: #c48aaa;
  --color-passionate-plum-500: #af6e93;
  --color-passionate-plum-600: #945d7d;
  --color-passionate-plum-700: #774b64;
  --color-passionate-plum-800: #57364a;
  --color-passionate-plum-900: #3d2534;
  --color-passionate-plum-950: #26131f;
}

SCSS

$passionate-plum: #703a5a;
$passionate-plum-rgb: 112, 58, 90;
$passionate-plum-light: mix(#fff, $passionate-plum, 20%);
$passionate-plum-dark: mix(#000, $passionate-plum, 20%);

.element {
  color: $passionate-plum;
  box-shadow: 0 0 0 2px rgba($passionate-plum, 0.35);
}