#5163F9

CSS

:root {
  --secret-of-mana: #5163f9;
  --secret-of-mana-rgb: 81 99 249;
  --secret-of-mana-oklch: oklch(0.575 0.222 272.1);
}

.element {
  color: var(--secret-of-mana);
  background-color: hsl(234 93% 65%);
  border-color: oklch(0.575 0.222 272.1);
}

Tailwind CSS v4

@theme {
  --color-secret-of-mana: #5163f9;
  --color-secret-of-mana-50: #e1f1ff;
  --color-secret-of-mana-100: #d1e3ff;
  --color-secret-of-mana-200: #b7ccff;
  --color-secret-of-mana-300: #96abff;
  --color-secret-of-mana-400: #748eff;
  --color-secret-of-mana-500: #5a6dff;
  --color-secret-of-mana-600: #4c5dea;
  --color-secret-of-mana-700: #3c4bbc;
  --color-secret-of-mana-800: #27378e;
  --color-secret-of-mana-900: #1a2664;
  --color-secret-of-mana-950: #0c1345;
}

SCSS

$secret-of-mana: #5163f9;
$secret-of-mana-rgb: 81, 99, 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);
}