#335FEE

CSS

:root {
  --secret-of-mana: #335fee;
  --secret-of-mana-rgb: 51 95 238;
  --secret-of-mana-oklch: oklch(0.546 0.221 266);
}

.element {
  color: var(--secret-of-mana);
  background-color: hsl(226 85% 57%);
  border-color: oklch(0.546 0.221 266);
}

Tailwind CSS v4

@theme {
  --color-secret-of-mana: #335fee;
  --color-secret-of-mana-50: #daf4ff;
  --color-secret-of-mana-100: #c8e6ff;
  --color-secret-of-mana-200: #acd0ff;
  --color-secret-of-mana-300: #87b0ff;
  --color-secret-of-mana-400: #6094ff;
  --color-secret-of-mana-500: #4074ff;
  --color-secret-of-mana-600: #3763e9;
  --color-secret-of-mana-700: #2b4fbc;
  --color-secret-of-mana-800: #183a8d;
  --color-secret-of-mana-900: #102864;
  --color-secret-of-mana-950: #041545;
}

SCSS

$secret-of-mana: #335fee;
$secret-of-mana-rgb: 51, 95, 238;
$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);
}