Onion Skin Blue

CSS

:root {
  --onion-skin-blue: #4c5692;
  --onion-skin-blue-rgb: 76 86 146;
  --onion-skin-blue-oklch: oklch(0.473 0.097 274.9);
}

.element {
  color: var(--onion-skin-blue);
  background-color: hsl(231 32% 44%);
  border-color: oklch(0.473 0.097 274.9);
}

Tailwind CSS v4

@theme {
  --color-onion-skin-blue: #4c5692;
  --color-onion-skin-blue-50: #edf3ff;
  --color-onion-skin-blue-100: #dfe6ff;
  --color-onion-skin-blue-200: #c9d1ff;
  --color-onion-skin-blue-300: #aab3ea;
  --color-onion-skin-blue-400: #8d9ad8;
  --color-onion-skin-blue-500: #7380c7;
  --color-onion-skin-blue-600: #626da8;
  --color-onion-skin-blue-700: #4e5787;
  --color-onion-skin-blue-800: #374064;
  --color-onion-skin-blue-900: #262c46;
  --color-onion-skin-blue-950: #14192e;
}

SCSS

$onion-skin-blue: #4c5692;
$onion-skin-blue-rgb: 76, 86, 146;
$onion-skin-blue-light: mix(#fff, $onion-skin-blue, 20%);
$onion-skin-blue-dark: mix(#000, $onion-skin-blue, 20%);

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