#37003D

CSS

:root {
  --dark-purple: #37003d;
  --dark-purple-rgb: 55 0 61;
  --dark-purple-oklch: oklch(0.241 0.114 323.6);
}

.element {
  color: var(--dark-purple);
  background-color: hsl(294 100% 12%);
  border-color: oklch(0.241 0.114 323.6);
}

Tailwind CSS v4

@theme {
  --color-dark-purple: #37003d;
  --color-dark-purple-50: #ffebff;
  --color-dark-purple-100: #fcdbfd;
  --color-dark-purple-200: #eec4ef;
  --color-dark-purple-300: #d6a3d7;
  --color-dark-purple-400: #bf87c5;
  --color-dark-purple-500: #aa6ab1;
  --color-dark-purple-600: #905a95;
  --color-dark-purple-700: #734878;
  --color-dark-purple-800: #54345a;
  --color-dark-purple-900: #3b243f;
  --color-dark-purple-950: #251228;
}

SCSS

$dark-purple: #37003d;
$dark-purple-rgb: 55, 0, 61;
$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);
}