#5267B7

CSS

:root {
  --loch-ness: #5267b7;
  --loch-ness-rgb: 82 103 183;
  --loch-ness-oklch: oklch(0.536 0.128 270.5);
}

.element {
  color: var(--loch-ness);
  background-color: hsl(228 41% 52%);
  border-color: oklch(0.536 0.128 270.5);
}

Tailwind CSS v4

@theme {
  --color-loch-ness: #5267b7;
  --color-loch-ness-50: #e8f4ff;
  --color-loch-ness-100: #d9e6ff;
  --color-loch-ness-200: #c1d1ff;
  --color-loch-ness-300: #a1b3f9;
  --color-loch-ness-400: #829aea;
  --color-loch-ness-500: #677fda;
  --color-loch-ness-600: #576cb8;
  --color-loch-ness-700: #455694;
  --color-loch-ness-800: #303f6e;
  --color-loch-ness-900: #202c4e;
  --color-loch-ness-950: #101934;
}

SCSS

$loch-ness: #5267b7;
$loch-ness-rgb: 82, 103, 183;
$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);
}