#5764F2

CSS

:root {
  --secret-of-mana: #5764f2;
  --secret-of-mana-rgb: 87 100 242;
  --secret-of-mana-oklch: oklch(0.575 0.211 273.8);
}

.element {
  color: var(--secret-of-mana);
  background-color: hsl(235 86% 65%);
  border-color: oklch(0.575 0.211 273.8);
}

Tailwind CSS v4

@theme {
  --color-secret-of-mana: #5764f2;
  --color-secret-of-mana-50: #e4f1ff;
  --color-secret-of-mana-100: #d4e3ff;
  --color-secret-of-mana-200: #bbccff;
  --color-secret-of-mana-300: #9babff;
  --color-secret-of-mana-400: #7a8eff;
  --color-secret-of-mana-500: #616eff;
  --color-secret-of-mana-600: #525ee3;
  --color-secret-of-mana-700: #414bb7;
  --color-secret-of-mana-800: #2b378a;
  --color-secret-of-mana-900: #1d2661;
  --color-secret-of-mana-950: #0e1343;
}

SCSS

$secret-of-mana: #5764f2;
$secret-of-mana-rgb: 87, 100, 242;
$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);
}