#2C0535

CSS

:root {
  --dark-purple: #2c0535;
  --dark-purple-rgb: 44 5 53;
  --dark-purple-oklch: oklch(0.22 0.093 319.3);
}

.element {
  color: var(--dark-purple);
  background-color: hsl(289 83% 11%);
  border-color: oklch(0.22 0.093 319.3);
}

Tailwind CSS v4

@theme {
  --color-dark-purple: #2c0535;
  --color-dark-purple-50: #ffedff;
  --color-dark-purple-100: #f7defb;
  --color-dark-purple-200: #e7c8ed;
  --color-dark-purple-300: #cea8d5;
  --color-dark-purple-400: #b78dc1;
  --color-dark-purple-500: #a171ad;
  --color-dark-purple-600: #886092;
  --color-dark-purple-700: #6d4d75;
  --color-dark-purple-800: #503858;
  --color-dark-purple-900: #37263d;
  --color-dark-purple-950: #221427;
}

SCSS

$dark-purple: #2c0535;
$dark-purple-rgb: 44, 5, 53;
$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);
}