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Tools / CSS neumorphism generator

CSS neumorphism generator

Compute precise complementary highlight and shadow coordinates for tactile neumorphic interfaces. Customize surface curves, light source directions, elevations, and corner radiuses.

Runs entirely in your browser

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About this tool

Neumorphism (“soft UI”) makes elements look extruded from or pressed into the background using two complementary shadows — a light highlight on one side and a dark shadow on the opposite side — so a surface appears convex, concave, flat or pressed. This generator computes those complementary shadow coordinates precisely and lets you customise the surface curve, light-source direction, elevation and corner radius.

The effect is unforgiving to hand-code because the two shadows must mirror each other exactly and match the background colour, or the illusion breaks. Letting the tool derive the highlight and shadow from your settings guarantees they stay consistent, and the live preview shows the result on a real card.

It runs in your browser and outputs the CSS to copy. A practical caution: neumorphism relies on very low contrast between the surface and its shadows, which can hurt accessibility, so use it thoughtfully and check important controls for sufficient contrast.

Frequently asked questions

What is neumorphism?
It is a soft-UI style where elements appear extruded from or pressed into the background using a paired light highlight and dark shadow, creating a subtle three-dimensional look.
Why do the two shadows need to match?
The convex or concave illusion depends on a light highlight and a dark shadow that mirror each other and match the background. The tool computes them together so they stay consistent.
Can I control the light direction and elevation?
Yes. You can set the light-source direction, elevation, surface curve and corner radius, and the generator recalculates the shadows to match.
Is neumorphism accessible?
It can be problematic because it relies on low contrast, which makes controls hard to see. Use it carefully and verify that interactive elements still meet contrast guidelines.
Is the CSS generated locally?
Yes. It runs in your browser and outputs copyable CSS, with nothing uploaded.

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