#4666F9

CSS

:root {
  --secret-of-mana: #4666f9;
  --secret-of-mana-rgb: 70 102 249;
  --secret-of-mana-oklch: oklch(0.575 0.222 268.9);
}

.element {
  color: var(--secret-of-mana);
  background-color: hsl(229 94% 63%);
  border-color: oklch(0.575 0.222 268.9);
}

Tailwind CSS v4

@theme {
  --color-secret-of-mana: #4666f9;
  --color-secret-of-mana-50: #ddf3ff;
  --color-secret-of-mana-100: #cce4ff;
  --color-secret-of-mana-200: #b1ceff;
  --color-secret-of-mana-300: #8eaeff;
  --color-secret-of-mana-400: #6a91ff;
  --color-secret-of-mana-500: #4d70ff;
  --color-secret-of-mana-600: #4260ea;
  --color-secret-of-mana-700: #344dbc;
  --color-secret-of-mana-800: #20398d;
  --color-secret-of-mana-900: #152764;
  --color-secret-of-mana-950: #071445;
}

SCSS

$secret-of-mana: #4666f9;
$secret-of-mana-rgb: 70, 102, 249;
$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);
}