#8A6995

CSS

:root {
  --sunshone-plum: #8a6995;
  --sunshone-plum-rgb: 138 105 149;
  --sunshone-plum-oklch: oklch(0.57 0.076 317.5);
}

.element {
  color: var(--sunshone-plum);
  background-color: hsl(285 17% 50%);
  border-color: oklch(0.57 0.076 317.5);
}

Tailwind CSS v4

@theme {
  --color-sunshone-plum: #8a6995;
  --color-sunshone-plum-50: #ffefff;
  --color-sunshone-plum-100: #f4e0f8;
  --color-sunshone-plum-200: #e3cae9;
  --color-sunshone-plum-300: #c9abd0;
  --color-sunshone-plum-400: #b191bc;
  --color-sunshone-plum-500: #9b76a8;
  --color-sunshone-plum-600: #83648e;
  --color-sunshone-plum-700: #695071;
  --color-sunshone-plum-800: #4d3a55;
  --color-sunshone-plum-900: #35283b;
  --color-sunshone-plum-950: #201625;
}

SCSS

$sunshone-plum: #8a6995;
$sunshone-plum-rgb: 138, 105, 149;
$sunshone-plum-light: mix(#fff, $sunshone-plum, 20%);
$sunshone-plum-dark: mix(#000, $sunshone-plum, 20%);

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