CSS Box Shadow Generator

Adjust the sliders and copy your CSS box-shadow code instantly.

Horizontal Offset (px): 10

Vertical Offset (px): 10

Blur Radius (px): 15

Spread Radius (px): 5

Shadow Color:

Generated CSS:

CSS Box Shadow Generator – Live Visual Box-Shadow Maker | KR3 Tool

CSS Box Shadow Generator – Live Visual Box-Shadow Maker

If you design UI, build websites, or work with front-end code, box-shadows are a quick way to add depth and polish. Our CSS Box Shadow Generator at KR3 Tool makes it easy to craft subtle elevation, dramatic drops, or soft glows — visually and interactively. No guessing numeric values: tweak sliders, preview changes live, and copy production-ready CSS to your project.

What is the CSS Box Shadow Generator?

The CSS Box Shadow Generator is an online tool that helps you create CSS box-shadow rules without memorizing offsets, blur radii, spread values, and color syntax. It provides:

Live preview of shadow effects on sample elements.
Sliders and inputs for horizontal offset, vertical offset, blur, spread, and color/alpha.
Options for inset shadows and multiple layered shadows.
Copy-to-clipboard for the resulting CSS declaration.

Why use a CSS Box Shadow Generator?

Hand-tuning shadow values is tedious and error-prone. The CSS Box Shadow Generator accelerates the design loop by letting you:

Iterate visually — adjust values and see results immediately.
Produce consistent shadows across UI components.
Experiment with opacity and color to match brand tones.
Export cross-browser friendly CSS without manual formatting.

Key Features of KR3 Tool’s Generator

Realtime Preview: See shadows on responsive sample boxes and buttons.
Multiple Shadows: Stack more than one shadow to create complex depth.
Inset Mode: Switch to inset shadows for inner bevels and grooves.
RGBA & HSLA Support: Choose color model and tweak alpha for subtle results.
Copy CSS: One-click copy of the final box-shadow line (including vendor-safe formatting).
Save Presets: Store commonly used shadows for reuse (if implemented in your site).

How to Use the CSS Box Shadow Generator

Open the CSS Box Shadow Generator on KR3 Tool.
Use the sliders or numeric inputs to set Horizontal Offset (X), Vertical Offset (Y), Blur Radius, and Spread Radius.
Pick a shadow color using the color picker; adjust alpha (opacity) for softer or harsher effects.
Toggle Inset if you want the shadow inside the element, not outside.
Click “Add Layer” to combine multiple shadows — repeat for depth and layered effects.
Preview on different sample elements (card, button, image) and responsive widths.
When satisfied, click “Copy CSS” and paste the rule into your stylesheet.

Common Shadow Patterns & Example CSS

1. Subtle Card Elevation

Use for cards, panels, and list items.

box-shadow: 0 6px 18px rgba(0,0,0,0.08);

2. Strong Dropdown Shadow

Use for dropdowns, modals, and overlays.

box-shadow: 0 10px 30px rgba(0,0,0,0.25);

3. Soft Glow (Colored)

Great for call-to-action buttons and highlights.

box-shadow: 0 8px 24px rgba(30,150,255,0.18);

4. Inset Inner Groove

Use inset to create pressed effects.

box-shadow: inset 0 4px 8px rgba(0,0,0,0.12);

5. Multi-layered Shadow

Combines multiple shadows to mimic realistic lighting.

box-shadow:
  0 2px 4px rgba(0,0,0,0.06),
  0 8px 20px rgba(0,0,0,0.12);

Best Practices & Design Tips

Less is more: Subtle shadows often feel more modern than heavy ones.
Match context: Use soft shadows for cards and stronger shadows for overlays to communicate layering.
Use alpha: Lower opacity (0.06–0.18) usually looks natural on web designs.
Multiple layers: Combine a small, sharp shadow with a larger, diffused shadow for realism.
Inset sparingly: Inset shadows are perfect for pressed buttons but can make elements look cramped if overused.
Consider background: Shadows on dark backgrounds require lighter, colored glows rather than black opacity.

Accessibility Considerations

Shadows contribute to visual hierarchy but should not be the only cue for interaction. Ensure:

Interactive elements also have clear focus styles (outline, ring) for keyboard users.
Shadows do not reduce text contrast—keep text legible over shadowed surfaces.
Don’t rely solely on depth or color to convey meaning; combine with labels and ARIA where needed.

Browser Support

The CSS box-shadow property is well supported across modern browsers. For details on syntax and older compatibility, review the MDN documentation: MDN – box-shadow.

Exported CSS: What You Get

When you copy the CSS from our CSS Box Shadow Generator, you’ll receive a ready-to-paste declaration like:

.card {
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 6px 18px rgba(0,0,0,0.08);
}

You can paste that into your stylesheet or into a <style> block. If you use multiple layered shadows, the generator returns a comma-separated list of shadows in the right order.

Advanced Options

Viewport-aware shadows: Preview shadow behavior at different screen sizes to ensure consistency.
Contrast presets: Switch between light and dark background previews to fine-tune shadow color and opacity.
Shadow presets: Choose from ready-made presets (Material, iOS, Neumorphism) and tweak them.
Neumorphism mode: Create soft, dual shadows for the popular neumorphic aesthetic using two opposing shadows (one light, one dark).

Sample Workflow — From Design to Production

Start with the visual preview and basic slider adjustments for X, Y, blur, and spread.
Set shadow color with RGBA and reduce opacity for a subtle effect.
Add a second shadow layer with a larger blur and tiny opacity to create atmospheric depth.
Test on light and dark backgrounds; adjust color hue for dark themes.
Copy final CSS and paste into your project; check on real devices and tweak if necessary.

Related Tools on KR3 Tool

CSS Gradient Generator – build background gradients for layered designs.
Color Picker – pick exact shadow colors and export hex/RGB values.
SVG to PNG Converter – prepare images to pair with shadowed elements.
Box Sizing Helper – check padding and border impacts for shadowed elements.

FAQs

What does each box-shadow value mean?

The typical box-shadow syntax is offset-x offset-y blur-radius spread-radius color. Optional keywords include inset. Offset-X/Y shift the shadow, blur controls softness, spread expands or contracts the shadow, and color sets its hue and alpha.

Can I create multiple shadows on one element?

Yes. CSS allows comma-separated shadows. The generator’s “Add Layer” feature builds multi-layered shadows visually and outputs them correctly.

How do I make a soft, realistic shadow?

Use a small, slightly dark inner shadow (low blur) combined with a larger, very soft outer shadow (high blur, very low opacity). Example: 0 3px 6px rgba(0,0,0,0.08), 0 20px 40px rgba(0,0,0,0.06).

Will this work in older browsers?

Modern browsers support box-shadow natively. If you need to support very old browsers, consider graceful fallbacks or progressive enhancement where shadows are optional visuals.

Conclusion

The CSS Box Shadow Generator from KR3 Tool removes guesswork from crafting shadows. Whether you need a subtle elevation for cards, a dramatic overlay for modals, or a neumorphic UI effect, our generator speeds up the process with live previews and production-ready CSS. Try it now to create consistent, accessible, and beautiful shadows for your web designs.