Box Shadow Generator Guide
How to create CSS box-shadow values for cards, buttons, panels, and modals while reviewing depth, opacity, and theme context.
Quick answer
Adjust offset, blur, spread, opacity, color, and inset mode, preview the result, then copy the CSS box-shadow value into the component that needs it.
What this tool does
The box shadow generator helps create CSS shadow values visually. It is useful for cards, buttons, panels, popovers, and modal surfaces.
Step-by-step use
- Choose the shadow color
- Adjust horizontal and vertical offset
- Tune blur and spread
- Set opacity for the surface context
- Enable inset mode only when a recessed effect is intended
- Copy the CSS and test it in the real component
Data handling and processing behavior
Shadow generation is handled in the browser for this tool. Avoid entering sensitive unreleased design tokens unless you have reviewed the implementation.
Best inputs
- Component background colors
- Shadow token candidates
- Card and button styling ideas
- Light and dark theme surface colors
Examples
Card surface
A light card on a gray background often needs a soft vertical shadow rather than a heavy glow.
Pressed state
Inset shadow can suggest a pressed or recessed input state when used sparingly.
Assumptions and limits
- One shadow value rarely fits every component
- Dark mode may need a different surface or border strategy
- Heavy shadows can reduce polish and increase visual noise
- Shadows should not hide focus indicators
Common mistakes
Copying a light-mode shadow into dark mode
The same value may disappear or look muddy on a dark surface.
Using shadows as the only separation
Borders, spacing, and background color often matter as much as shadow.
Next steps
- Gradient Generator — create background surfaces to test shadows against
- Color Converter — normalize shadow and surface colors
- Contrast Checker — verify text remains readable on the final surface
- CSS Clamp Generator — pair visual polish with responsive spacing