#7B6581

CSS

:root {
  --sunshone-plum: #7b6581;
  --sunshone-plum-rgb: 123 101 129;
  --sunshone-plum-oklch: oklch(0.538 0.05 318.9);
}

.element {
  color: var(--sunshone-plum);
  background-color: hsl(287 12% 45%);
  border-color: oklch(0.538 0.05 318.9);
}

Tailwind CSS v4

@theme {
  --color-sunshone-plum: #7b6581;
  --color-sunshone-plum-50: #fcf1fe;
  --color-sunshone-plum-100: #f0e3f2;
  --color-sunshone-plum-200: #dfcee2;
  --color-sunshone-plum-300: #c4afc7;
  --color-sunshone-plum-400: #ac95b2;
  --color-sunshone-plum-500: #957c9c;
  --color-sunshone-plum-600: #7e6984;
  --color-sunshone-plum-700: #655469;
  --color-sunshone-plum-800: #4a3d4e;
  --color-sunshone-plum-900: #332a36;
  --color-sunshone-plum-950: #1f1821;
}

SCSS

$sunshone-plum: #7b6581;
$sunshone-plum-rgb: 123, 101, 129;
$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);
}