#422543

CSS

:root {
  --purple-void: #422543;
  --purple-void-rgb: 66 37 67;
  --purple-void-oklch: oklch(0.315 0.065 325.8);
}

.element {
  color: var(--purple-void);
  background-color: hsl(298 29% 20%);
  border-color: oklch(0.315 0.065 325.8);
}

Tailwind CSS v4

@theme {
  --color-purple-void: #422543;
  --color-purple-void-50: #ffefff;
  --color-purple-void-100: #f4e1f3;
  --color-purple-void-200: #e4cbe3;
  --color-purple-void-300: #caacc8;
  --color-purple-void-400: #b392b3;
  --color-purple-void-500: #9d779d;
  --color-purple-void-600: #856585;
  --color-purple-void-700: #6a516b;
  --color-purple-void-800: #4e3b4f;
  --color-purple-void-900: #362837;
  --color-purple-void-950: #211622;
}

SCSS

$purple-void: #422543;
$purple-void-rgb: 66, 37, 67;
$purple-void-light: mix(#fff, $purple-void, 20%);
$purple-void-dark: mix(#000, $purple-void, 20%);

.element {
  color: $purple-void;
  box-shadow: 0 0 0 2px rgba($purple-void, 0.35);
}