#906999

CSS

:root {
  --sunshone-plum: #906999;
  --sunshone-plum-rgb: 144 105 153;
  --sunshone-plum-oklch: oklch(0.578 0.085 319.9);
}

.element {
  color: var(--sunshone-plum);
  background-color: hsl(289 19% 51%);
  border-color: oklch(0.578 0.085 319.9);
}

Tailwind CSS v4

@theme {
  --color-sunshone-plum: #906999;
  --color-sunshone-plum-50: #ffeeff;
  --color-sunshone-plum-100: #f6dff9;
  --color-sunshone-plum-200: #e6c9ea;
  --color-sunshone-plum-300: #cca9d2;
  --color-sunshone-plum-400: #b58ebe;
  --color-sunshone-plum-500: #9f73a9;
  --color-sunshone-plum-600: #87628f;
  --color-sunshone-plum-700: #6c4e73;
  --color-sunshone-plum-800: #4f3955;
  --color-sunshone-plum-900: #37273c;
  --color-sunshone-plum-950: #221525;
}

SCSS

$sunshone-plum: #906999;
$sunshone-plum-rgb: 144, 105, 153;
$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);
}