Consistent interfaces allow users to develop usage patterns. They feel more predictable and are easier to learn.
Consistency reduces the learning curve. When elements behave the same way across the application, users don't have to relearn how to interact with each new screen. It builds trust and makes the product feel cohesive and polished.
Using the same colors, typography, and spacing throughout the application.
Interactive elements should work the same way everywhere.
Consistency within the product itself, adhering to its own rules.
Consistency with platform standards and user expectations.
Use the design system components instead of creating custom ones for every instance.
Use the same words for the same actions (e.g., don't mix "Delete" and "Remove").
Keep navigation menus and primary actions in the same place on every page.