#4265FF

CSS

:root {
  --secret-of-mana: #4265ff;
  --secret-of-mana-rgb: 66 101 255;
  --secret-of-mana-oklch: oklch(0.577 0.231 268.2);
}

.element {
  color: var(--secret-of-mana);
  background-color: hsl(229 100% 63%);
  border-color: oklch(0.577 0.231 268.2);
}

Tailwind CSS v4

@theme {
  --color-secret-of-mana: #4265ff;
  --color-secret-of-mana-50: #dbf3ff;
  --color-secret-of-mana-100: #cae4ff;
  --color-secret-of-mana-200: #aeceff;
  --color-secret-of-mana-300: #8badff;
  --color-secret-of-mana-400: #6590ff;
  --color-secret-of-mana-500: #496fff;
  --color-secret-of-mana-600: #3e5fef;
  --color-secret-of-mana-700: #314cc0;
  --color-secret-of-mana-800: #1d3891;
  --color-secret-of-mana-900: #132667;
  --color-secret-of-mana-950: #061347;
}

SCSS

$secret-of-mana: #4265ff;
$secret-of-mana-rgb: 66, 101, 255;
$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);
}