#6870BC

CSS

:root {
  --loch-ness: #6870bc;
  --loch-ness-rgb: 104 112 188;
  --loch-ness-oklch: oklch(0.573 0.117 277.5);
}

.element {
  color: var(--loch-ness);
  background-color: hsl(234 39% 57%);
  border-color: oklch(0.573 0.117 277.5);
}

Tailwind CSS v4

@theme {
  --color-loch-ness: #6870bc;
  --color-loch-ness-50: #eef2ff;
  --color-loch-ness-100: #dfe5ff;
  --color-loch-ness-200: #c9d0ff;
  --color-loch-ness-300: #abb1f3;
  --color-loch-ness-400: #8e97e3;
  --color-loch-ness-500: #747dd2;
  --color-loch-ness-600: #626ab1;
  --color-loch-ness-700: #4e558e;
  --color-loch-ness-800: #373e6a;
  --color-loch-ness-900: #262b4b;
  --color-loch-ness-950: #141831;
}

SCSS

$loch-ness: #6870bc;
$loch-ness-rgb: 104, 112, 188;
$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);
}