#2E003C

CSS

:root {
  --dark-purple: #2e003c;
  --dark-purple-rgb: 46 0 60;
  --dark-purple-oklch: oklch(0.224 0.109 316.4);
}

.element {
  color: var(--dark-purple);
  background-color: hsl(286 100% 12%);
  border-color: oklch(0.224 0.109 316.4);
}

Tailwind CSS v4

@theme {
  --color-dark-purple: #2e003c;
  --color-dark-purple-50: #ffecff;
  --color-dark-purple-100: #f8ddff;
  --color-dark-purple-200: #e9c6f3;
  --color-dark-purple-300: #cfa6dc;
  --color-dark-purple-400: #b88aca;
  --color-dark-purple-500: #a36eb6;
  --color-dark-purple-600: #895d9a;
  --color-dark-purple-700: #6e4b7c;
  --color-dark-purple-800: #50365d;
  --color-dark-purple-900: #382541;
  --color-dark-purple-950: #221329;
}

SCSS

$dark-purple: #2e003c;
$dark-purple-rgb: 46, 0, 60;
$dark-purple-light: mix(#fff, $dark-purple, 20%);
$dark-purple-dark: mix(#000, $dark-purple, 20%);

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