Handsome Blue

CSS

:root {
  --handsome-blue: #355887;
  --handsome-blue-rgb: 53 88 135;
  --handsome-blue-oklch: oklch(0.457 0.087 256.2);
}

.element {
  color: var(--handsome-blue);
  background-color: hsl(214 44% 37%);
  border-color: oklch(0.457 0.087 256.2);
}

Tailwind CSS v4

@theme {
  --color-handsome-blue: #355887;
  --color-handsome-blue-50: #e6f7ff;
  --color-handsome-blue-100: #d6e9ff;
  --color-handsome-blue-200: #bed6fa;
  --color-handsome-blue-300: #9cb9e5;
  --color-handsome-blue-400: #7ca1d2;
  --color-handsome-blue-500: #5f88bf;
  --color-handsome-blue-600: #5173a2;
  --color-handsome-blue-700: #405c82;
  --color-handsome-blue-800: #2d4460;
  --color-handsome-blue-900: #1e2f43;
  --color-handsome-blue-950: #0e1b2b;
}

SCSS

$handsome-blue: #355887;
$handsome-blue-rgb: 53, 88, 135;
$handsome-blue-light: mix(#fff, $handsome-blue, 20%);
$handsome-blue-dark: mix(#000, $handsome-blue, 20%);

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