#8C6896

CSS

:root {
  --sunshone-plum: #8c6896;
  --sunshone-plum-rgb: 140 104 150;
  --sunshone-plum-oklch: oklch(0.57 0.081 318.8);
}

.element {
  color: var(--sunshone-plum);
  background-color: hsl(287 18% 50%);
  border-color: oklch(0.57 0.081 318.8);
}

Tailwind CSS v4

@theme {
  --color-sunshone-plum: #8c6896;
  --color-sunshone-plum-50: #ffeeff;
  --color-sunshone-plum-100: #f5e0f9;
  --color-sunshone-plum-200: #e5caea;
  --color-sunshone-plum-300: #cbaad1;
  --color-sunshone-plum-400: #b38fbd;
  --color-sunshone-plum-500: #9d75a8;
  --color-sunshone-plum-600: #85638e;
  --color-sunshone-plum-700: #6a4f72;
  --color-sunshone-plum-800: #4e3a55;
  --color-sunshone-plum-900: #36273b;
  --color-sunshone-plum-950: #211525;
}

SCSS

$sunshone-plum: #8c6896;
$sunshone-plum-rgb: 140, 104, 150;
$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);
}