#365DF3

CSS

:root {
  --secret-of-mana: #365df3;
  --secret-of-mana-rgb: 54 93 243;
  --secret-of-mana-oklch: oklch(0.547 0.228 266.9);
}

.element {
  color: var(--secret-of-mana);
  background-color: hsl(228 89% 58%);
  border-color: oklch(0.547 0.228 266.9);
}

Tailwind CSS v4

@theme {
  --color-secret-of-mana: #365df3;
  --color-secret-of-mana-50: #daf3ff;
  --color-secret-of-mana-100: #c8e5ff;
  --color-secret-of-mana-200: #accfff;
  --color-secret-of-mana-300: #88afff;
  --color-secret-of-mana-400: #6292ff;
  --color-secret-of-mana-500: #4371ff;
  --color-secret-of-mana-600: #3960ee;
  --color-secret-of-mana-700: #2d4dbf;
  --color-secret-of-mana-800: #1a3990;
  --color-secret-of-mana-900: #102766;
  --color-secret-of-mana-950: #051447;
}

SCSS

$secret-of-mana: #365df3;
$secret-of-mana-rgb: 54, 93, 243;
$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);
}