#956797

CSS

:root {
  --sunshone-plum: #956797;
  --sunshone-plum-rgb: 149 103 151;
  --sunshone-plum-oklch: oklch(0.579 0.09 325.2);
}

.element {
  color: var(--sunshone-plum);
  background-color: hsl(298 19% 50%);
  border-color: oklch(0.579 0.09 325.2);
}

Tailwind CSS v4

@theme {
  --color-sunshone-plum: #956797;
  --color-sunshone-plum-50: #ffedff;
  --color-sunshone-plum-100: #f9def8;
  --color-sunshone-plum-200: #eac7e8;
  --color-sunshone-plum-300: #d1a8cf;
  --color-sunshone-plum-400: #ba8cbc;
  --color-sunshone-plum-500: #a471a7;
  --color-sunshone-plum-600: #8b608d;
  --color-sunshone-plum-700: #6f4c71;
  --color-sunshone-plum-800: #513854;
  --color-sunshone-plum-900: #39263b;
  --color-sunshone-plum-950: #231425;
}

SCSS

$sunshone-plum: #956797;
$sunshone-plum-rgb: 149, 103, 151;
$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);
}