ToolHarbor
Generators

CSS Box Shadow Generator

Generate CSS box-shadow values with live parameters.

Use the tool

Use CSS Box Shadow Generator to create realistic shadow values for cards, dialogs, buttons, dropdowns, and layered UI surfaces.

Color & CSS Studio

CSS Box Shadow Generator

Generate CSS box-shadow values with live parameters.

Settings

CSS

Preview card
Run the tool to generate code.

Quick Tips

Use the generated CSS directly in your component stylesheet. Click any color swatch to copy HEX instantly.

Why use CSS Box Shadow Generator

  • Generate box-shadow CSS for cards, modals, popovers, buttons, and floating panels.
  • Tune offset, blur, spread, color, opacity, and inset behavior with a visual preview.
  • Create a reusable elevation scale for a component library or design system.
  • Prototype subtle UI depth without guessing shadow values by hand.

About this tool

Box shadows for UI depth

CSS Box Shadow Generator helps create copy-ready shadow values that communicate elevation, focus, and layering in interfaces.

Tune shadows visually

Good shadows depend on blur, spread, offset, opacity, and background color. A value that works on white may look muddy or too strong on tinted surfaces.

Build a shadow scale

Instead of inventing a new shadow for every component, create a small elevation scale for cards, menus, dialogs, and overlays. This keeps the UI consistent.

Example usage

Input

Offset 0 12, blur 30, spread -12, color rgba(15, 23, 42, 0.35)

Output

box-shadow: 0 12px 30px -12px rgba(15, 23, 42, 0.35);

Practical guide for CSS Box Shadow Generator

Best practices

  • Use a small shadow scale instead of many unrelated one-off shadows.
  • Check shadows on the real page background and in dark mode if supported.
  • Keep shadows subtle for dense dashboards and operational UI.

Common mistakes

  • Using heavy shadows on every card and flattening the visual hierarchy.
  • Ignoring performance when applying complex shadows to many animated elements.
  • Using pure black shadows at high opacity on modern UI surfaces.

How this tool works

  1. Step 1

    Open CSS Box Shadow Generator and review the default example input.

  2. Step 2

    Paste your own input or upload source data when required.

  3. Step 3

    Run CSS Box Shadow Generator to generate output instantly in the browser.

  4. Step 4

    Verify the output using the preview and formatting helpers on the page.

  5. Step 5

    Copy the final result and continue with a related tool if needed.

Use related links to continue your workflow and keep your output consistent across ToolHarbor pages.

Password GeneratorGenerate strong random passwords.Random Number GeneratorGenerate random numbers in a custom range.CSS Border Radius GeneratorGenerate border-radius CSS values for UI blocks.CSS Flexbox GeneratorGenerate flexbox CSS layouts with copy-ready code.CSS Grid GeneratorGenerate CSS grid templates and placement rules.

Continue exploring

Previous: Random Hex Color GeneratorNext: CSS Border Radius GeneratorMore in GeneratorsBrowse all tools

Popular workflows

JSON FormatterMerge PDFCrop Image OnlineTrim VideoCompress VideoMP4 to GIF

FAQ

What values make up CSS box-shadow?

Common values include horizontal offset, vertical offset, blur radius, spread radius, color, and optional inset.

Can I use multiple shadows?

Yes. Layered shadows can look more natural, but they should be kept consistent and tested for performance on heavy UI lists.

Why does my shadow look muddy?

The opacity may be too high, the blur too low, the spread too large, or the shadow color may not match the surface.

Where should box shadows be used?

Use them for cards, modals, dropdowns, focus surfaces, and elements that need visible elevation from the page.