#616CCA

CSS

:root {
  --loch-ness: #616cca;
  --loch-ness-rgb: 97 108 202;
  --loch-ness-oklch: oklch(0.568 0.144 275.8);
}

.element {
  color: var(--loch-ness);
  background-color: hsl(234 50% 59%);
  border-color: oklch(0.568 0.144 275.8);
}

Tailwind CSS v4

@theme {
  --color-loch-ness: #616cca;
  --color-loch-ness-50: #ebf2ff;
  --color-loch-ness-100: #dce4ff;
  --color-loch-ness-200: #c5cfff;
  --color-loch-ness-300: #a6b0ff;
  --color-loch-ness-400: #8896f2;
  --color-loch-ness-500: #6e7ae4;
  --color-loch-ness-600: #5d68c0;
  --color-loch-ness-700: #4a539a;
  --color-loch-ness-800: #333d73;
  --color-loch-ness-900: #232a51;
  --color-loch-ness-950: #121736;
}

SCSS

$loch-ness: #616cca;
$loch-ness-rgb: 97, 108, 202;
$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);
}