Scotch Blue

CSS

:root {
  --scotch-blue: #000077;
  --scotch-blue-rgb: 0 0 119;
  --scotch-blue-oklch: oklch(0.257 0.178 264.1);
}

.element {
  color: var(--scotch-blue);
  background-color: hsl(240 100% 23%);
  border-color: oklch(0.257 0.178 264.1);
}

Tailwind CSS v4

@theme {
  --color-scotch-blue: #000077;
  --color-scotch-blue-50: #ddf5ff;
  --color-scotch-blue-100: #cce7ff;
  --color-scotch-blue-200: #b1d3ff;
  --color-scotch-blue-300: #8cb4ff;
  --color-scotch-blue-400: #6799ff;
  --color-scotch-blue-500: #477dfa;
  --color-scotch-blue-600: #3d6ad3;
  --color-scotch-blue-700: #3055aa;
  --color-scotch-blue-800: #1e3f7f;
  --color-scotch-blue-900: #132b5a;
  --color-scotch-blue-950: #06183d;
}

SCSS

$scotch-blue: #000077;
$scotch-blue-rgb: 0, 0, 119;
$scotch-blue-light: mix(#fff, $scotch-blue, 20%);
$scotch-blue-dark: mix(#000, $scotch-blue, 20%);

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