#3B69F4

CSS

:root {
  --secret-of-mana: #3b69f4;
  --secret-of-mana-rgb: 59 105 244;
  --secret-of-mana-oklch: oklch(0.572 0.215 265.8);
}

.element {
  color: var(--secret-of-mana);
  background-color: hsl(225 89% 59%);
  border-color: oklch(0.572 0.215 265.8);
}

Tailwind CSS v4

@theme {
  --color-secret-of-mana: #3b69f4;
  --color-secret-of-mana-50: #daf4ff;
  --color-secret-of-mana-100: #c9e6ff;
  --color-secret-of-mana-200: #add0ff;
  --color-secret-of-mana-300: #88b0ff;
  --color-secret-of-mana-400: #6294ff;
  --color-secret-of-mana-500: #4275ff;
  --color-secret-of-mana-600: #3864e6;
  --color-secret-of-mana-700: #2c50b9;
  --color-secret-of-mana-800: #193b8b;
  --color-secret-of-mana-900: #102963;
  --color-secret-of-mana-950: #041544;
}

SCSS

$secret-of-mana: #3b69f4;
$secret-of-mana-rgb: 59, 105, 244;
$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);
}