#2B5FEF

CSS

:root {
  --secret-of-mana: #2b5fef;
  --secret-of-mana-rgb: 43 95 239;
  --secret-of-mana-oklch: oklch(0.544 0.224 264.6);
}

.element {
  color: var(--secret-of-mana);
  background-color: hsl(224 86% 55%);
  border-color: oklch(0.544 0.224 264.6);
}

Tailwind CSS v4

@theme {
  --color-secret-of-mana: #2b5fef;
  --color-secret-of-mana-50: #d8f4ff;
  --color-secret-of-mana-100: #c6e6ff;
  --color-secret-of-mana-200: #a9d1ff;
  --color-secret-of-mana-300: #83b1ff;
  --color-secret-of-mana-400: #5a94ff;
  --color-secret-of-mana-500: #3874ff;
  --color-secret-of-mana-600: #3063eb;
  --color-secret-of-mana-700: #264fbd;
  --color-secret-of-mana-800: #133b8e;
  --color-secret-of-mana-900: #0c2865;
  --color-secret-of-mana-950: #021546;
}

SCSS

$secret-of-mana: #2b5fef;
$secret-of-mana-rgb: 43, 95, 239;
$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);
}