#866A96

CSS

:root {
  --sunshone-plum: #866a96;
  --sunshone-plum-rgb: 134 106 150;
  --sunshone-plum-oklch: oklch(0.568 0.074 312.9);
}

.element {
  color: var(--sunshone-plum);
  background-color: hsl(278 17% 50%);
  border-color: oklch(0.568 0.074 312.9);
}

Tailwind CSS v4

@theme {
  --color-sunshone-plum: #866a96;
  --color-sunshone-plum-50: #fdefff;
  --color-sunshone-plum-100: #f1e1f9;
  --color-sunshone-plum-200: #e0cbea;
  --color-sunshone-plum-300: #c6add2;
  --color-sunshone-plum-400: #ae92be;
  --color-sunshone-plum-500: #9778a9;
  --color-sunshone-plum-600: #80668f;
  --color-sunshone-plum-700: #665173;
  --color-sunshone-plum-800: #4b3b55;
  --color-sunshone-plum-900: #34293c;
  --color-sunshone-plum-950: #1f1625;
}

SCSS

$sunshone-plum: #866a96;
$sunshone-plum-rgb: 134, 106, 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);
}