#8D6794

CSS

:root {
  --sunshone-plum: #8d6794;
  --sunshone-plum-rgb: 141 103 148;
  --sunshone-plum-oklch: oklch(0.569 0.081 321.1);
}

.element {
  color: var(--sunshone-plum);
  background-color: hsl(291 18% 49%);
  border-color: oklch(0.569 0.081 321.1);
}

Tailwind CSS v4

@theme {
  --color-sunshone-plum: #8d6794;
  --color-sunshone-plum-50: #ffeeff;
  --color-sunshone-plum-100: #f6dff8;
  --color-sunshone-plum-200: #e6c9e9;
  --color-sunshone-plum-300: #ccaad0;
  --color-sunshone-plum-400: #b58fbc;
  --color-sunshone-plum-500: #9f74a7;
  --color-sunshone-plum-600: #86638d;
  --color-sunshone-plum-700: #6c4f71;
  --color-sunshone-plum-800: #4f3954;
  --color-sunshone-plum-900: #37273b;
  --color-sunshone-plum-950: #211525;
}

SCSS

$sunshone-plum: #8d6794;
$sunshone-plum-rgb: 141, 103, 148;
$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);
}