#78498F

CSS

:root {
  --grapes-of-italy: #78498f;
  --grapes-of-italy-rgb: 120 73 143;
  --grapes-of-italy-oklch: oklch(0.489 0.119 313.7);
}

.element {
  color: var(--grapes-of-italy);
  background-color: hsl(280 32% 42%);
  border-color: oklch(0.489 0.119 313.7);
}

Tailwind CSS v4

@theme {
  --color-grapes-of-italy: #78498f;
  --color-grapes-of-italy-50: #ffebff;
  --color-grapes-of-italy-100: #f8dcff;
  --color-grapes-of-italy-200: #e8c5f7;
  --color-grapes-of-italy-300: #cfa5e1;
  --color-grapes-of-italy-400: #b889d0;
  --color-grapes-of-italy-500: #a26cbd;
  --color-grapes-of-italy-600: #895ca0;
  --color-grapes-of-italy-700: #6e4980;
  --color-grapes-of-italy-800: #503560;
  --color-grapes-of-italy-900: #382443;
  --color-grapes-of-italy-950: #22132b;
}

SCSS

$grapes-of-italy: #78498f;
$grapes-of-italy-rgb: 120, 73, 143;
$grapes-of-italy-light: mix(#fff, $grapes-of-italy, 20%);
$grapes-of-italy-dark: mix(#000, $grapes-of-italy, 20%);

.element {
  color: $grapes-of-italy;
  box-shadow: 0 0 0 2px rgba($grapes-of-italy, 0.35);
}