#325DD3

CSS

:root {
  --savoy-blue: #325dd3;
  --savoy-blue-rgb: 50 93 211;
  --savoy-blue-oklch: oklch(0.519 0.188 265.2);
}

.element {
  color: var(--savoy-blue);
  background-color: hsl(224 65% 51%);
  border-color: oklch(0.519 0.188 265.2);
}

Tailwind CSS v4

@theme {
  --color-savoy-blue: #325dd3;
  --color-savoy-blue-50: #ddf4ff;
  --color-savoy-blue-100: #cce7ff;
  --color-savoy-blue-200: #b0d2ff;
  --color-savoy-blue-300: #8cb3ff;
  --color-savoy-blue-400: #6798ff;
  --color-savoy-blue-500: #487aff;
  --color-savoy-blue-600: #3d68d8;
  --color-savoy-blue-700: #3053ae;
  --color-savoy-blue-800: #1e3d82;
  --color-savoy-blue-900: #132a5c;
  --color-savoy-blue-950: #06173f;
}

SCSS

$savoy-blue: #325dd3;
$savoy-blue-rgb: 50, 93, 211;
$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);
}