box-shadow: 5px 5px 10px 0px rgba(0, 0, 0, 0.5);

Generate CSS box shadow code with live preview. Free tool for depth, hover effects, and neumorphism. Copy-paste ready for your website.

CSS Box Shadow Generator: Add Depth to Your Elements

Flat design is clean but can look lifeless.
A subtle shadow adds depth and makes elements pop.
A CSS box shadow generator creates perfect shadows in seconds.

You do not need to guess pixel values or test endlessly.
Just adjust sliders and see the shadow in real time.
Copy the CSS and paste it into your project instantly.

What Is a CSS Box Shadow?

A CSS box shadow adds a drop shadow effect to HTML elements.
It creates the illusion of depth behind buttons, cards, or images.
The shadow follows the element’s shape automatically.

You control the shadow’s horizontal and vertical offset.
You also control blur radius, spread, and color.
Multiple shadows can be combined for complex effects.

Core Functions of a Good Generator

• Set horizontal and vertical shadow offset
• Adjust blur radius for soft or sharp shadows
• Control spread radius for shadow size
• Pick shadow color with opacity
• Add inner shadow (inset) for pressed effects
• Generate CSS code instantly with live preview

Our tool includes all these features.
No CSS expertise or trial-and-error coding needed.

Why You Need a Box Shadow Generator

Box shadows are everywhere in modern web design.
Here is why mastering them matters.

Adding Depth to Buttons

Flat buttons look two-dimensional.
A subtle shadow makes buttons feel clickable.
Users instinctively know where to click.

Creating Card Elevation

Cards should look layered on the background.
Shadows show which card is on top.
Material Design uses elevation shadows extensively.

Hover and Focus Effects

Shadows can change on hover for feedback.
Button lifts up when the mouse hovers.
Users feel the interactive response.

Neumorphism Design

Soft, blurred shadows create the neumorphic look.
Two shadows (light and dark) create embossed effects.
A specialized but popular design trend.

How to Use Our CSS Box Shadow Generator

The tool is built for visual experimentation.
Follow these steps to create your perfect shadow.

Step-by-Step Guide

1. Adjust horizontal offset (X) – positive moves shadow right.
2. Adjust vertical offset (Y) – positive moves shadow down.
3. Adjust blur radius – higher = softer shadow edges.
4. Adjust spread radius – positive grows shadow size.
5. Pick shadow color with opacity.
6. Toggle inset for inner shadow.
7. Copy the generated CSS code.

The live preview updates with every adjustment.
You see exactly how your shadow will look.
Add multiple shadows by clicking “Add Shadow”.

Pro Tips for Best Results

• Start with small values (2-10px) for realistic shadows.
• Use low opacity (10-30%) for subtle effects.
• Dark gray is more realistic than pure black.
• Test shadows on different backgrounds.
• Bookmark the tool for every project.

Box Shadow Parameters Explained

Each parameter changes the shadow in a specific way.
Here is what each setting does.

Horizontal Offset (X)

Positive value: Shadow moves right.
Negative value: Shadow moves left.
Zero value: Shadow centered under element.

Vertical Offset (Y)

Positive value: Shadow moves down.
Negative value: Shadow moves up.
Zero value: Shadow spreads evenly around.

Blur Radius

Higher value: Softer, more diffuse shadow edges.
Lower value: Sharper, more defined shadow edges.
Zero value: No blur, hard-edged shadow.

Spread Radius

Positive value: Shadow grows larger than element.
Negative value: Shadow shrinks smaller than element.
Zero value: Shadow same size as element.

Color

Sets the shadow color.
Use rgba() or hsla() for opacity control.
Black with low opacity is most common.

Inset

Makes the shadow inside the element.
Creates a pressed or recessed effect.
Common for input fields and pressed buttons.

Real-World Shadow Examples

Seeing actual shadows makes the value clear.
Here are common shadow combinations.

Example 1: Subtle Button Shadow

css

box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);

Effect: Slight shadow below button.
Use: Default buttons, cards.

Example 2: Hover Lift Effect

css

/* Normal state */
box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);

/* Hover state */
box-shadow: 0 8px 16px rgba(0, 0, 0, 0.15);

Effect: Button appears to lift on hover.
Use: Interactive buttons, cards.

Example 3: Deep Card Shadow

css

box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);

Effect: Strong shadow, high elevation.
Use: Modals, dropdowns, featured cards.

Example 4: Soft Glow

css

box-shadow: 0 0 15px rgba(66, 153, 225, 0.5);

Effect: Colored glow around element.
Use: Focus states, active elements, notifications.

Example 5: Inner Shadow (Inset)

css

box-shadow: inset 0 2px 5px rgba(0, 0, 0, 0.1);

Effect: Recessed, pressed-in look.
Use: Input fields, pressed buttons, well elements.

Example 6: Neumorphism (Two Shadows)

css

box-shadow: 5px 5px 10px rgba(0, 0, 0, 0.1),
            -5px -5px 10px rgba(255, 255, 255, 0.5);

Effect: Soft, embossed 3D look.
Use: Neumorphic design elements.

Shadow Design Best Practices

Great shadows are subtle and intentional.
Follow these guidelines for professional results.

Use Low Opacity

10% to 30% opacity is usually enough.
Higher opacity looks muddy and unnatural.
Dark gray with 15% opacity works almost everywhere.

Prefer Dark Gray Over Black

Pure black shadows look harsh.
Use #333, #444, or rgba(0,0,0,0.1).
Matches natural lighting better.

Match Shadow to Background

Dark backgrounds need lighter shadows.
Light backgrounds need darker shadows.
The shadow should be visible but not dominant.

Elevation Hierarchy

Higher elements need larger shadows.
Modal > Card > Button > Background.
Users understand depth naturally.

Keep Consistent

Use the same shadow patterns across your site.
Define shadow variables in CSS.
Maintain visual consistency everywhere.

Box Shadow for Different UI Elements

Each element type needs different shadow treatment.
Here are recommendations.

Buttons

Normal: Small offset, small blur (0 2px 4px)
Hover: Larger offset, larger blur (0 6px 12px)
Active/Pressed: Inset shadow for pressed feel

Cards

Default: Medium offset, medium blur (0 4px 8px)
Hover: Larger shadow for lift (0 8px 16px)
Featured: Largest shadow (0 12px 24px)

Modals and Popups

Always: Large shadow, large blur (0 20px 35px)
No hover effect needed: Modals are already prominent
Spread optional: Can make shadow slightly larger

Input Fields

Normal: Inset shadow or very subtle (0 1px 2px inset)
Focus: Glow effect with brand color (0 0 0 3px rgba(0,120,255,0.25))
Error: Red glow for validation

Navbars

Sticky/Sticky: Bottom shadow for separation
Floating: Full shadow around navbar
Default: Very subtle or none

Multiple Shadows Explained

You can layer multiple shadows for complex effects.
Here is how to use them.

Syntax

css

box-shadow: shadow1, shadow2, shadow3;

Separate shadows with commas.
First shadow is on top, last shadow on bottom.

Realistic Depth

css

box-shadow: 0 1px 2px rgba(0,0,0,0.05),
            0 4px 8px rgba(0,0,0,0.08),
            0 10px 20px rgba(0,0,0,0.1);

Three shadows create realistic depth.
Closest shadow is smallest and darkest.

Neumorphism Light/Dark

css

box-shadow: 8px 8px 16px rgba(0,0,0,0.1),
            -8px -8px 16px rgba(255,255,255,0.8);

One dark shadow down-right.
One light shadow up-left.
Creates soft, embossed effect.

Glow with Outline

css

box-shadow: 0 0 0 3px rgba(66,153,225,0.5),
            0 0 8px rgba(66,153,225,0.3);

First shadow is solid outline.
Second shadow is glow.
Creates focus ring with glow.

Our generator supports multiple shadows.
Click “Add Shadow” to build complex effects.

Box Shadow vs. Drop Shadow

CSS has two similar but different properties.
Here is the difference.

Box Shadow

Applies to the element’s bounding box.
Square or rectangle shape only.
Faster performance.

Drop Shadow (Filter)

Applies to the element’s actual shape.
Follows transparency and borders.
Slower performance but more accurate.

css

/* Box shadow on a PNG logo - square shadow */
box-shadow: 0 4px 8px rgba(0,0,0,0.2);

/* Drop shadow on a PNG logo - follows shape */
filter: drop-shadow(0 4px 8px rgba(0,0,0,0.2));

Use box shadow for rectangular elements.
Use drop shadow for irregular shapes.

Common Box Shadow Mistakes

Even experienced designers make these errors.
Avoid them for professional results.

Mistake 1: Opacity Too High

50% opacity black looks dirty.
Use 10% to 25% instead.
Subtle shadows look more realistic.

Mistake 2: Too Much Blur

Extreme blur creates a cloud, not a shadow.
Blur should be 2-5x the offset.
Offset 4px, blur 8-16px is good.

Mistake 3: Spread Without Purpose

Spread makes shadow larger in all directions.
Usually unnecessary for most shadows.
Use spread for outline effects only.

Mistake 4: Using Pure Black

rgba(0,0,0,0.2) still looks dark.
Try rgba(30,30,30,0.15) for softer shadow.
Matches natural light better.

Mistake 5: Inconsistent Shadows

Every card has a different shadow.
Website looks messy and uncoordinated.
Define shadow variables and reuse them.

Performance Considerations

Box shadows are GPU-accelerated.
Here is what you need to know.

Performance Is Good

Modern browsers handle shadows efficiently.
Thousands of shadows are fine.
No noticeable performance impact.

Avoid Animating Box Shadow

Animating box shadow causes repaints.
Use transform or opacity for animations instead.
Or animate a pseudo-element shadow.

Large Blur Values

Extremely large blur (100px+) has minor cost.
Still fine for a few elements.
Not recommended for hundreds of elements.

Privacy and Security

Your CSS code is not sensitive.
Here is our privacy guarantee.

Our Security Guarantee

• All generation happens in your browser
• No settings are ever sent to our server
• Your code never leaves your computer
• No storage or logging of any kind

We cannot see or access your generated CSS.
The technology runs locally on your device.
Your designs stay completely private.

Frequently Asked Questions (FAQs)

Conclusion

Box shadows add depth and polish to any design.
Manual coding requires guessing and testing.
A CSS box shadow generator gives you visual control and instant code.

Our tool works with live preview and multiple shadow layers.
Copy production-ready CSS for any element.
Add professional depth to your designs in seconds.