#6360C3

CSS

:root {
  --savoy-blue: #6360c3;
  --savoy-blue-rgb: 99 96 195;
  --savoy-blue-oklch: oklch(0.542 0.15 281.5);
}

.element {
  color: var(--savoy-blue);
  background-color: hsl(242 45% 57%);
  border-color: oklch(0.542 0.15 281.5);
}

Tailwind CSS v4

@theme {
  --color-savoy-blue: #6360c3;
  --color-savoy-blue-50: #eff0ff;
  --color-savoy-blue-100: #e1e2ff;
  --color-savoy-blue-200: #cbccff;
  --color-savoy-blue-300: #adadff;
  --color-savoy-blue-400: #9092f4;
  --color-savoy-blue-500: #7875e6;
  --color-savoy-blue-600: #6664c2;
  --color-savoy-blue-700: #51509c;
  --color-savoy-blue-800: #393a75;
  --color-savoy-blue-900: #272852;
  --color-savoy-blue-950: #151637;
}

SCSS

$savoy-blue: #6360c3;
$savoy-blue-rgb: 99, 96, 195;
$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);
}