What is glassmorphism?
Glassmorphism is a UI style that looks like frosted glass: a translucent panel sits over colorful content, with a soft blur so the background shows through without competing with the text. Typical ingredients are transparency, layered depth, a vivid backdrop, and a light border that reads as a glass edge.
The effect usually comes from CSS backdrop-filter: blur() plus a semi-transparent background. This generator tunes those values and shows the result against a sample image.
How to use the generator
- Blur — higher values look more frosted.
- Transparency — lower opacity lets more of the background through.
- Color — a light white or dark tint is common; stronger tints work when contrast needs help.
- Preview — check text readability on the sample background.
- Copy CSS — paste into your project; keep the solid
backgroundfallback for unsupported browsers.
Practical tips
- Use it as an accent — nav bars, modals, and cards work well; full-page glass often feels muddy.
- Protect readability — if text fails contrast, raise opacity or add a subtle text shadow. The Contrast Checker helps validate pairs.
- Pick a busy enough background — flat gray hides the effect; gradients and photos show it off.
- Keep a fallback — when
backdrop-filteris missing, the solid background still has to look intentional.
Accessibility
Semi-transparent overlays can drop text contrast as the background bleeds through. Prefer higher opacity behind body text, verify WCAG ratios, and avoid rapid blur animations that can bother people with vestibular sensitivity. Keyboard focus styles should stay visible on glass surfaces.
Related creative tools
- CSS Box Shadow Generator — lift the glass panel slightly off the page.
- Border Radius Previewer — tune corner rounding beyond the default.
- CSS Gradient Generator — build a background that shows through the blur.
Frequently asked questions
What is the backdrop-filter property?
backdrop-filter applies effects like blur to whatever sits behind an element. Paired with a semi-transparent background, it produces the frosted-glass look.
Why is there a -webkit- prefix in the code?
Safari historically needed -webkit-backdrop-filter. The generator includes both forms so the blur works more consistently across browsers.
Is glassmorphism hard on performance?
Blur can be expensive on large or animated surfaces, especially on phones. Keep blur modest, avoid nesting many filtered layers, and test on real devices.
What blur radius usually looks right?
Many UIs land around 10–20px. Lower values feel subtle; higher values look more frosted. Match it to your background detail and text contrast needs.
Can I use glassmorphism in dark mode?
Yes. You may need a slightly stronger tint or higher opacity so text stays readable on dark backgrounds. Check contrast with a contrast tool before shipping.
How do I keep glass panels accessible?
Aim for WCAG text contrast (often 4.5:1 for normal text), keep a solid fallback background, and avoid relying on blur alone for meaning. Use the Contrast Checker to verify pairs.