#352295

CSS

:root {
  --gentian-blue: #352295;
  --gentian-blue-rgb: 53 34 149;
  --gentian-blue-oklch: oklch(0.363 0.175 280.7);
}

.element {
  color: var(--gentian-blue);
  background-color: hsl(250 63% 36%);
  border-color: oklch(0.363 0.175 280.7);
}

Tailwind CSS v4

@theme {
  --color-gentian-blue: #352295;
  --color-gentian-blue-50: #edf0ff;
  --color-gentian-blue-100: #dfe1ff;
  --color-gentian-blue-200: #c9cbff;
  --color-gentian-blue-300: #ababff;
  --color-gentian-blue-400: #8d8fff;
  --color-gentian-blue-500: #7571f5;
  --color-gentian-blue-600: #6360cf;
  --color-gentian-blue-700: #4f4da6;
  --color-gentian-blue-800: #37387d;
  --color-gentian-blue-900: #252758;
  --color-gentian-blue-950: #14143c;
}

SCSS

$gentian-blue: #352295;
$gentian-blue-rgb: 53, 34, 149;
$gentian-blue-light: mix(#fff, $gentian-blue, 20%);
$gentian-blue-dark: mix(#000, $gentian-blue, 20%);

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