#5363CB

CSS

:root {
  --savoy-blue: #5363cb;
  --savoy-blue-rgb: 83 99 203;
  --savoy-blue-oklch: oklch(0.542 0.161 273.3);
}

.element {
  color: var(--savoy-blue);
  background-color: hsl(232 54% 56%);
  border-color: oklch(0.542 0.161 273.3);
}

Tailwind CSS v4

@theme {
  --color-savoy-blue: #5363cb;
  --color-savoy-blue-50: #e7f2ff;
  --color-savoy-blue-100: #d8e4ff;
  --color-savoy-blue-200: #c0cfff;
  --color-savoy-blue-300: #a0b0ff;
  --color-savoy-blue-400: #8095fc;
  --color-savoy-blue-500: #6679ef;
  --color-savoy-blue-600: #5667c9;
  --color-savoy-blue-700: #4552a2;
  --color-savoy-blue-800: #2f3c79;
  --color-savoy-blue-900: #202a56;
  --color-savoy-blue-950: #10173a;
}

SCSS

$savoy-blue: #5363cb;
$savoy-blue-rgb: 83, 99, 203;
$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);
}