#2E0236

CSS

:root {
  --dark-purple: #2e0236;
  --dark-purple-rgb: 46 2 54;
  --dark-purple-oklch: oklch(0.221 0.1 320.9);
}

.element {
  color: var(--dark-purple);
  background-color: hsl(291 93% 11%);
  border-color: oklch(0.221 0.1 320.9);
}

Tailwind CSS v4

@theme {
  --color-dark-purple: #2e0236;
  --color-dark-purple-50: #ffecff;
  --color-dark-purple-100: #f9ddfc;
  --color-dark-purple-200: #eac6ee;
  --color-dark-purple-300: #d1a6d6;
  --color-dark-purple-400: #ba8bc3;
  --color-dark-purple-500: #a46faf;
  --color-dark-purple-600: #8b5e93;
  --color-dark-purple-700: #6f4b76;
  --color-dark-purple-800: #513758;
  --color-dark-purple-900: #39253e;
  --color-dark-purple-950: #231427;
}

SCSS

$dark-purple: #2e0236;
$dark-purple-rgb: 46, 2, 54;
$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);
}