#606CCC

CSS

:root {
  --loch-ness: #606ccc;
  --loch-ness-rgb: 96 108 204;
  --loch-ness-oklch: oklch(0.569 0.147 275.3);
}

.element {
  color: var(--loch-ness);
  background-color: hsl(233 51% 59%);
  border-color: oklch(0.569 0.147 275.3);
}

Tailwind CSS v4

@theme {
  --color-loch-ness: #606ccc;
  --color-loch-ness-50: #eaf2ff;
  --color-loch-ness-100: #dbe4ff;
  --color-loch-ness-200: #c4cfff;
  --color-loch-ness-300: #a5b0ff;
  --color-loch-ness-400: #8695f4;
  --color-loch-ness-500: #6c7ae6;
  --color-loch-ness-600: #5c67c2;
  --color-loch-ness-700: #49539c;
  --color-loch-ness-800: #333d75;
  --color-loch-ness-900: #222a52;
  --color-loch-ness-950: #121737;
}

SCSS

$loch-ness: #606ccc;
$loch-ness-rgb: 96, 108, 204;
$loch-ness-light: mix(#fff, $loch-ness, 20%);
$loch-ness-dark: mix(#000, $loch-ness, 20%);

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