#8E6796

CSS

:root {
  --sunshone-plum: #8e6796;
  --sunshone-plum-rgb: 142 103 150;
  --sunshone-plum-oklch: oklch(0.571 0.084 320.6);
}

.element {
  color: var(--sunshone-plum);
  background-color: hsl(290 19% 50%);
  border-color: oklch(0.571 0.084 320.6);
}

Tailwind CSS v4

@theme {
  --color-sunshone-plum: #8e6796;
  --color-sunshone-plum-50: #ffeeff;
  --color-sunshone-plum-100: #f6dff9;
  --color-sunshone-plum-200: #e6c9ea;
  --color-sunshone-plum-300: #cdaad1;
  --color-sunshone-plum-400: #b58ebd;
  --color-sunshone-plum-500: #9f74a8;
  --color-sunshone-plum-600: #87628e;
  --color-sunshone-plum-700: #6c4e72;
  --color-sunshone-plum-800: #4f3955;
  --color-sunshone-plum-900: #37273b;
  --color-sunshone-plum-950: #221525;
}

SCSS

$sunshone-plum: #8e6796;
$sunshone-plum-rgb: 142, 103, 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);
}