#5666EC

CSS

:root {
  --secret-of-mana: #5666ec;
  --secret-of-mana-rgb: 86 102 236;
  --secret-of-mana-oklch: oklch(0.573 0.201 273.2);
}

.element {
  color: var(--secret-of-mana);
  background-color: hsl(234 80% 63%);
  border-color: oklch(0.573 0.201 273.2);
}

Tailwind CSS v4

@theme {
  --color-secret-of-mana: #5666ec;
  --color-secret-of-mana-50: #e4f1ff;
  --color-secret-of-mana-100: #d4e3ff;
  --color-secret-of-mana-200: #bbcdff;
  --color-secret-of-mana-300: #9badff;
  --color-secret-of-mana-400: #7a90ff;
  --color-secret-of-mana-500: #6071ff;
  --color-secret-of-mana-600: #5160de;
  --color-secret-of-mana-700: #404db3;
  --color-secret-of-mana-800: #2b3986;
  --color-secret-of-mana-900: #1d275f;
  --color-secret-of-mana-950: #0e1441;
}

SCSS

$secret-of-mana: #5666ec;
$secret-of-mana-rgb: 86, 102, 236;
$secret-of-mana-light: mix(#fff, $secret-of-mana, 20%);
$secret-of-mana-dark: mix(#000, $secret-of-mana, 20%);

.element {
  color: $secret-of-mana;
  box-shadow: 0 0 0 2px rgba($secret-of-mana, 0.35);
}