#8A6990

CSS

:root {
  --sunshone-plum: #8a6990;
  --sunshone-plum-rgb: 138 105 144;
  --sunshone-plum-oklch: oklch(0.568 0.07 321.2);
}

.element {
  color: var(--sunshone-plum);
  background-color: hsl(291 16% 49%);
  border-color: oklch(0.568 0.07 321.2);
}

Tailwind CSS v4

@theme {
  --color-sunshone-plum: #8a6990;
  --color-sunshone-plum-50: #ffefff;
  --color-sunshone-plum-100: #f4e0f6;
  --color-sunshone-plum-200: #e4cbe6;
  --color-sunshone-plum-300: #caaccd;
  --color-sunshone-plum-400: #b291b8;
  --color-sunshone-plum-500: #9c77a3;
  --color-sunshone-plum-600: #846589;
  --color-sunshone-plum-700: #6a506e;
  --color-sunshone-plum-800: #4d3b52;
  --color-sunshone-plum-900: #362839;
  --color-sunshone-plum-950: #211623;
}

SCSS

$sunshone-plum: #8a6990;
$sunshone-plum-rgb: 138, 105, 144;
$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);
}