#2D0434

CSS

:root {
  --dark-purple: #2d0434;
  --dark-purple-rgb: 45 4 52;
  --dark-purple-oklch: oklch(0.22 0.095 321.4);
}

.element {
  color: var(--dark-purple);
  background-color: hsl(291 86% 11%);
  border-color: oklch(0.22 0.095 321.4);
}

Tailwind CSS v4

@theme {
  --color-dark-purple: #2d0434;
  --color-dark-purple-50: #ffedff;
  --color-dark-purple-100: #f8defa;
  --color-dark-purple-200: #e9c7ec;
  --color-dark-purple-300: #d0a7d4;
  --color-dark-purple-400: #b98cc0;
  --color-dark-purple-500: #a371ac;
  --color-dark-purple-600: #8a6091;
  --color-dark-purple-700: #6e4c74;
  --color-dark-purple-800: #513757;
  --color-dark-purple-900: #38263d;
  --color-dark-purple-950: #231426;
}

SCSS

$dark-purple: #2d0434;
$dark-purple-rgb: 45, 4, 52;
$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);
}