#375EF0

CSS

:root {
  --secret-of-mana: #375ef0;
  --secret-of-mana-rgb: 55 94 240;
  --secret-of-mana-oklch: oklch(0.547 0.223 266.9);
}

.element {
  color: var(--secret-of-mana);
  background-color: hsl(227 86% 58%);
  border-color: oklch(0.547 0.223 266.9);
}

Tailwind CSS v4

@theme {
  --color-secret-of-mana: #375ef0;
  --color-secret-of-mana-50: #dbf3ff;
  --color-secret-of-mana-100: #c9e5ff;
  --color-secret-of-mana-200: #adcfff;
  --color-secret-of-mana-300: #89afff;
  --color-secret-of-mana-400: #6392ff;
  --color-secret-of-mana-500: #4472ff;
  --color-secret-of-mana-600: #3a61eb;
  --color-secret-of-mana-700: #2e4ebd;
  --color-secret-of-mana-800: #1b398e;
  --color-secret-of-mana-900: #112865;
  --color-secret-of-mana-950: #051446;
}

SCSS

$secret-of-mana: #375ef0;
$secret-of-mana-rgb: 55, 94, 240;
$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);
}