#3D61E2

CSS

:root {
  --savoy-blue: #3d61e2;
  --savoy-blue-rgb: 61 97 226;
  --savoy-blue-oklch: oklch(0.543 0.2 267.4);
}

.element {
  color: var(--savoy-blue);
  background-color: hsl(227 74% 56%);
  border-color: oklch(0.543 0.2 267.4);
}

Tailwind CSS v4

@theme {
  --color-savoy-blue: #3d61e2;
  --color-savoy-blue-50: #def4ff;
  --color-savoy-blue-100: #cde6ff;
  --color-savoy-blue-200: #b2d0ff;
  --color-savoy-blue-300: #8fb0ff;
  --color-savoy-blue-400: #6a95ff;
  --color-savoy-blue-500: #4c76ff;
  --color-savoy-blue-600: #4165df;
  --color-savoy-blue-700: #3351b3;
  --color-savoy-blue-800: #203b86;
  --color-savoy-blue-900: #15295f;
  --color-savoy-blue-950: #071641;
}

SCSS

$savoy-blue: #3d61e2;
$savoy-blue-rgb: 61, 97, 226;
$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);
}