#856B91

CSS

:root {
  --sunshone-plum: #856b91;
  --sunshone-plum-rgb: 133 107 145;
  --sunshone-plum-oklch: oklch(0.567 0.065 315);
}

.element {
  color: var(--sunshone-plum);
  background-color: hsl(281 15% 49%);
  border-color: oklch(0.567 0.065 315);
}

Tailwind CSS v4

@theme {
  --color-sunshone-plum: #856b91;
  --color-sunshone-plum-50: #fdf0ff;
  --color-sunshone-plum-100: #f1e2f7;
  --color-sunshone-plum-200: #e0cce7;
  --color-sunshone-plum-300: #c5aece;
  --color-sunshone-plum-400: #ad93b9;
  --color-sunshone-plum-500: #9779a4;
  --color-sunshone-plum-600: #7f678b;
  --color-sunshone-plum-700: #66526f;
  --color-sunshone-plum-800: #4a3c53;
  --color-sunshone-plum-900: #34293a;
  --color-sunshone-plum-950: #1f1724;
}

SCSS

$sunshone-plum: #856b91;
$sunshone-plum-rgb: 133, 107, 145;
$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);
}