UI Design is not the same as UX Design but the relationship between them is one of dependency. UI is a part, a component / stage of the UX process.

Color Theory

👉 Color Theory for UX Designers

Typography

👉 Typography for UX Designers

Style Guides

👉 How to Create a Style Guide

Accessibility

👉 Web Content Accessibility Guidelines (WCAG)

👉 Inclusive Design Lab

👉 A11yproject

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