#4267F6

CSS

:root {
  --secret-of-mana: #4267f6;
  --secret-of-mana-rgb: 66 103 246;
  --secret-of-mana-oklch: oklch(0.573 0.218 267.7);
}

.element {
  color: var(--secret-of-mana);
  background-color: hsl(228 91% 61%);
  border-color: oklch(0.573 0.218 267.7);
}

Tailwind CSS v4

@theme {
  --color-secret-of-mana: #4267f6;
  --color-secret-of-mana-50: #dcf3ff;
  --color-secret-of-mana-100: #cbe5ff;
  --color-secret-of-mana-200: #b0cfff;
  --color-secret-of-mana-300: #8cafff;
  --color-secret-of-mana-400: #6792ff;
  --color-secret-of-mana-500: #4a72ff;
  --color-secret-of-mana-600: #3f62e8;
  --color-secret-of-mana-700: #314ebb;
  --color-secret-of-mana-800: #1e3a8c;
  --color-secret-of-mana-900: #132863;
  --color-secret-of-mana-950: #061445;
}

SCSS

$secret-of-mana: #4267f6;
$secret-of-mana-rgb: 66, 103, 246;
$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);
}