#35008B

CSS

:root {
  --dramatic-blue: #35008b;
  --dramatic-blue-rgb: 53 0 139;
  --dramatic-blue-oklch: oklch(0.322 0.187 286);
}

.element {
  color: var(--dramatic-blue);
  background-color: hsl(263 100% 27%);
  border-color: oklch(0.322 0.187 286);
}

Tailwind CSS v4

@theme {
  --color-dramatic-blue: #35008b;
  --color-dramatic-blue-50: #f2eeff;
  --color-dramatic-blue-100: #e4dfff;
  --color-dramatic-blue-200: #d0c8ff;
  --color-dramatic-blue-300: #b3a6ff;
  --color-dramatic-blue-400: #9789ff;
  --color-dramatic-blue-500: #816af9;
  --color-dramatic-blue-600: #6d5ad2;
  --color-dramatic-blue-700: #5748a9;
  --color-dramatic-blue-800: #3d357f;
  --color-dramatic-blue-900: #2a245a;
  --color-dramatic-blue-950: #18123d;
}

SCSS

$dramatic-blue: #35008b;
$dramatic-blue-rgb: 53, 0, 139;
$dramatic-blue-light: mix(#fff, $dramatic-blue, 20%);
$dramatic-blue-dark: mix(#000, $dramatic-blue, 20%);

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