---
title: "UI kit – the designer's component library | Sweet Lava"
description: "A UI kit is a set of ready interface components in a design tool: buttons, fields, cards, navigation. See how it differs from a design system."
url: https://sweetlava.eu/en/glossary/ui-kit/
lang: en
alternate_pl: https://sweetlava.eu/pl/slownik/ui-kit/
---

Design & branding 

# What is UI kit?

A UI kit is a set of ready interface components (buttons, fields, cards, navigation) in a design tool – the visual library from which a designer assembles screens.

A UI kit is often confused with a design system, but it is only the system's visual part: components in a design tool without the code layer, pattern documentation or governance. A UI kit speeds up design; a design system connects design with implementation.

For smaller projects a well-built UI kit can be enough – provided it is used with discipline. Once more people or teams work on a product, the missing code layer starts to hurt: every developer interprets the mock-ups differently and consistency erodes.

**In practice:** start with a UI kit, and as the product grows, evolve it into a full design system with coded components.

## Related services

- [ Brand identity design & design systems → ](https://sweetlava.eu/en/services/branding-design-systems/)
- [ UX audits & UX/UI design → ](https://sweetlava.eu/en/services/ux-ui-ax/)

## Related terms

- [Atomic design](https://sweetlava.eu/en/glossary/atomic-design/)
- [Design system](https://sweetlava.eu/en/glossary/design-system/)

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