#5F70BB

CSS

:root {
  --loch-ness: #5f70bb;
  --loch-ness-rgb: 95 112 187;
  --loch-ness-oklch: oklch(0.566 0.118 272.5);
}

.element {
  color: var(--loch-ness);
  background-color: hsl(229 40% 55%);
  border-color: oklch(0.566 0.118 272.5);
}

Tailwind CSS v4

@theme {
  --color-loch-ness: #5f70bb;
  --color-loch-ness-50: #eaf3ff;
  --color-loch-ness-100: #dbe6ff;
  --color-loch-ness-200: #c5d1ff;
  --color-loch-ness-300: #a5b3f4;
  --color-loch-ness-400: #8799e4;
  --color-loch-ness-500: #6c7fd4;
  --color-loch-ness-600: #5c6cb3;
  --color-loch-ness-700: #49568f;
  --color-loch-ness-800: #333f6b;
  --color-loch-ness-900: #232c4b;
  --color-loch-ness-950: #121932;
}

SCSS

$loch-ness: #5f70bb;
$loch-ness-rgb: 95, 112, 187;
$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);
}