Tailwind CSS is fantastic for rapid UI development, but large projects can develop inconsistencies and hard-to-maintain component trees. Here are the patterns I've adopted after shipping several production Tailwind projects.

Extract Components, Not Classes

Resist the urge to use @apply for grouping utilities. Instead, extract React components. Components enforce DRY at the right level — they capture both structure and styles, while @apply creates hidden coupling between your CSS and HTML structure.

Design Tokens via CSS Variables

Define your brand colors as CSS custom properties and register them in your Tailwind config. This makes theming (light/dark) trivial and keeps all color decisions in one place. Tailwind v4's @theme directive makes this even cleaner.

Consistent Spacing Scale

Pick a spacing scale and stick to it. Use space-y-4, space-y-6, space-y-8 for component internals and mt-12, mt-16, mt-20 between sections. When every developer uses the same mental model, the design becomes naturally consistent.