Testing color perception involves showing users the colors or design and evaluating their reactions. The approach you take depends on your testing goals.

For first impressions, it's best to show the colors briefly. Tests like the 5-second test^[1] and the first-click test^[2] are useful for capturing initial reactions. To find out what users prefer, present them with multiple color combinations or designs for comparison.

Testing colors in isolation helps you select the right ones. However, user reactions may change when these colors are part of a full design, so test them within the actual UI. Key elements to focus on include CTAs, text, and background. For remote testing, tools like Typeform that allow image display can be effective.

When testing UI elements, assess one element at a time to pinpoint what influences user perceptions. Ensure the differences are clear enough for a non-designer to notice.