Glassmorphism Generator

Generate the popular frosted glass CSS effect with blur, transparency, and border controls.

CSS Glassmorphism Generator

Create the trendy "frosted glass" UI effect instantly. Adjust the blur, transparency, and background color to generate cross-browser compatible CSS code for your modern web projects.

Glass Effect Preview

Look at how the background blurs dynamically behind this element.

How to Use

1

Set the blur amount

Adjust backdrop-filter blur (8–24px typical) for the frosted glass intensity.

2

Choose background color and opacity

Set a semi-transparent white or dark fill (10–30% opacity) for the glass panel.

3

Adjust border radius and border

Round corners and add a subtle light border for the glass edge effect.

4

Copy the CSS and apply

Copy the generated CSS rules and apply to your card, modal, or nav above a colorful background.

What is Glassmorphism?

Glassmorphism is a UI design trend that simulates a frosted glass surface using CSS backdrop-filter blur, semi-transparent backgrounds, and subtle borders. Made popular by Apple macOS Big Sur and thousands of modern web interfaces, it creates depth and hierarchy without relying on heavy shadows or solid color blocking.

Real-World Examples & Use Cases

Card Components in Dashboard UIs

Glassmorphic cards in dashboards create visual separation between sections while maintaining a light, airy design. Metrics cards, notification panels, and widget containers styled with backdrop-blur and semi-transparent backgrounds overlay a gradient or blurred background image. This approach is widely adopted in SaaS analytics UIs, allowing individual data cards to stand out without harsh drop shadows that can feel heavy on data-dense screens.

Modal and Dialog Overlays

Glassmorphism modals maintain context awareness — the blurred background reminds users what they were doing while the frosted overlay draws focus to the dialog content. This is more user-friendly than a black 50% opacity overlay that completely obscures the triggering screen. Login modals, confirmation dialogs, and image lightboxes all benefit from the glass treatment, particularly on colorful or photographic backgrounds.

Navigation Bars with Blur

Sticky navigation bars with backdrop-filter blur create the effect used by Apple.com, Notion, and many modern web apps. As users scroll, page content appears to slide behind the frosted nav bar rather than disappearing under an opaque strip. Implementation: position: sticky; top: 0; backdrop-filter: blur(12px); background: rgba(255,255,255,0.7). This maintains navbar readability without visually cutting off page content.

Pricing and Feature Cards

Highlighted pricing tiers use glassmorphism to visually elevate the recommended plan above standard cards. A glass card on a gradient background clearly distinguishes the featured plan without resorting to heavy border or shadow styling. The frosted overlay creates a perception of premium quality appropriate for the 'most popular' tier. This technique is used by Stripe, Vercel, and other developer-focused products in their pricing pages.

How It Works

Core CSS properties for glassmorphism: .glass-card { background: rgba(255, 255, 255, 0.15); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); /* Safari */ border: 1px solid rgba(255, 255, 255, 0.2); border-radius: 16px; } Key parameters: - background opacity: 0.1–0.3 (lighter = more transparent glass) - blur: 8px–24px (higher = more frosted) - border: rgba with 0.1–0.3 opacity (subtle edge highlight) - border-radius: 8px–24px (card roundness) Requires a colorful or complex background behind the element. Browser support: Chrome 76+, Firefox 103+, Safari 9+ (vendor prefix)

Frequently Asked Questions

Why doesn't the blur effect show anything on my page?▼
The backdrop-filter CSS property only produces a visible blur when the element with it is positioned on top of other content — a background image, gradient, or colorful elements behind it in the stacking order. If the parent has overflow: hidden, backdrop-filter may not work. Ensure the glass element is absolute/fixed positioned or sits above other page content. backdrop-filter is not visible on plain white backgrounds since there is nothing to blur.
Is glassmorphism accessible?▼
Glassmorphism can create accessibility issues if text contrast is insufficient. The background color of a glass card is dynamic — it changes based on what content the blur captures behind it. This means text contrast cannot be guaranteed by the glass background alone. To ensure WCAG compliance, add a sufficient background opacity (typically 0.5+) on glass cards containing text, or use a guaranteed minimum contrast overlay in addition to the blur.
Does backdrop-filter work in all browsers?▼
backdrop-filter is supported in Chrome 76+, Edge 17+, and Safari 9+ (with -webkit-backdrop-filter prefix). Firefox support was added in version 103 (2022). Very old browsers that don't support it will simply render the element without the blur — the rgba background still provides some transparency. For broad compatibility, always include -webkit-backdrop-filter: blur(value) alongside the standard property.
How do I apply glassmorphism to a navigation bar that scrolls?▼
Use: position: sticky; top: 0; z-index: 50; backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); background: rgba(255,255,255,0.7); border-bottom: 1px solid rgba(255,255,255,0.2). The sticky positioning keeps the nav at the top of the viewport while scroll content passes behind it, creating the blur effect. On dark themes, use background: rgba(17,24,39,0.7) and border-bottom: 1px solid rgba(255,255,255,0.08).
What background works best behind glassmorphism elements?▼
Glassmorphism looks best above gradient backgrounds, colorful abstract images, or blurred photography. A monotone or white background produces a barely visible effect. Gradient backgrounds with blue/purple/violet hues are most common in the design. Some interfaces layer multiple glass cards at different depths above the same gradient background to create perceived 3D depth without actual 3D CSS transforms.

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