The Complete Guide to Tailwind CSS Shadows
Tailwind CSS ships with a handful of utility shadows — shadow-sm,
shadow-md,
shadow-lg, and
shadow-xl — which cover most basic use cases.
But real-world UI design constantly demands more: colored shadows that match your brand palette, multi-layered depth effects
for card elevations, inner shadows for pressed-button states, and neon glows for dark-mode hero sections.
That's where arbitrary value shadows come in.
With Tailwind v4's arbitrary value syntax, you can write classes like
shadow-[0_4px_20px_rgba(99,102,241,0.4)]
directly in your markup. The compiler generates exactly the CSS you need with zero config file changes.
This generator lets you visually design those values instead of guessing hex codes and pixel offsets,
then copies the exact class string to your clipboard.
Multi-Layer Shadows for Realistic Depth
A single box-shadow rarely looks natural. Real-world objects cast multiple shadow layers at different distances and intensities. This tool lets you stack unlimited shadow layers — for example, a tight 2px shadow for the contact edge combined with a soft 30px ambient shadow for the surrounding glow. Each layer has independent controls for X/Y offset, blur radius, spread, color, and opacity. The result exports as a single Tailwind arbitrary class with comma-separated shadow values.
Neon Glow Effects for Dark Mode
Neon glows have become a signature element of modern dark-theme UI. To create one, you set the shadow offsets to zero and crank up the blur radius with a vibrant color — cyan, fuchsia, emerald, or electric blue. Stacking two layers (a wide soft glow at 40–60px blur with a concentrated inner glow at 10–15px) produces the characteristic neon tube effect. This generator includes one-click presets for popular glow styles so you can start from a polished baseline and fine-tune from there.
When to Use This Tool
Card components: Design elevation hierarchies where primary cards have stronger shadows than secondary ones. Call-to-action buttons: Add colored glow effects that pulse attention toward sign-up or purchase actions. Modal overlays: Create deep ambient shadows that separate the modal from the background content. Dark mode hero sections: Build dramatic neon accent glows behind headings and feature showcases. All generated classes are framework-agnostic — they work in React, Vue, Svelte, or plain HTML with Tailwind installed.