#6B6FBD

CSS

:root {
  --loch-ness: #6b6fbd;
  --loch-ness-rgb: 107 111 189;
  --loch-ness-oklch: oklch(0.574 0.119 279.7);
}

.element {
  color: var(--loch-ness);
  background-color: hsl(237 38% 58%);
  border-color: oklch(0.574 0.119 279.7);
}

Tailwind CSS v4

@theme {
  --color-loch-ness: #6b6fbd;
  --color-loch-ness-50: #eff2ff;
  --color-loch-ness-100: #e1e4ff;
  --color-loch-ness-200: #cbcfff;
  --color-loch-ness-300: #adb0f3;
  --color-loch-ness-400: #9096e4;
  --color-loch-ness-500: #777bd3;
  --color-loch-ness-600: #6569b2;
  --color-loch-ness-700: #51548f;
  --color-loch-ness-800: #393d6b;
  --color-loch-ness-900: #272a4b;
  --color-loch-ness-950: #151732;
}

SCSS

$loch-ness: #6b6fbd;
$loch-ness-rgb: 107, 111, 189;
$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);
}