#626FBA

CSS

:root {
  --loch-ness: #626fba;
  --loch-ness-rgb: 98 111 186;
  --loch-ness-oklch: oklch(0.565 0.117 274.6);
}

.element {
  color: var(--loch-ness);
  background-color: hsl(231 39% 56%);
  border-color: oklch(0.565 0.117 274.6);
}

Tailwind CSS v4

@theme {
  --color-loch-ness: #626fba;
  --color-loch-ness-50: #ecf3ff;
  --color-loch-ness-100: #dde5ff;
  --color-loch-ness-200: #c7d1ff;
  --color-loch-ness-300: #a7b2f3;
  --color-loch-ness-400: #8a99e3;
  --color-loch-ness-500: #707ed3;
  --color-loch-ness-600: #5f6bb2;
  --color-loch-ness-700: #4b568f;
  --color-loch-ness-800: #353f6b;
  --color-loch-ness-900: #242b4b;
  --color-loch-ness-950: #131831;
}

SCSS

$loch-ness: #626fba;
$loch-ness-rgb: 98, 111, 186;
$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);
}