#4D64CA

CSS

:root {
  --savoy-blue: #4d64ca;
  --savoy-blue-rgb: 77 100 202;
  --savoy-blue-oklch: oklch(0.539 0.16 270.6);
}

.element {
  color: var(--savoy-blue);
  background-color: hsl(229 54% 55%);
  border-color: oklch(0.539 0.16 270.6);
}

Tailwind CSS v4

@theme {
  --color-savoy-blue: #4d64ca;
  --color-savoy-blue-50: #e5f3ff;
  --color-savoy-blue-100: #d5e5ff;
  --color-savoy-blue-200: #bdd0ff;
  --color-savoy-blue-300: #9cb1ff;
  --color-savoy-blue-400: #7b97fc;
  --color-savoy-blue-500: #607bef;
  --color-savoy-blue-600: #5168c9;
  --color-savoy-blue-700: #4153a2;
  --color-savoy-blue-800: #2c3d79;
  --color-savoy-blue-900: #1d2a55;
  --color-savoy-blue-950: #0e173a;
}

SCSS

$savoy-blue: #4d64ca;
$savoy-blue-rgb: 77, 100, 202;
$savoy-blue-light: mix(#fff, $savoy-blue, 20%);
$savoy-blue-dark: mix(#000, $savoy-blue, 20%);

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