Color Reaction
Respond quickly to changing color cues.
Start TestReaction benchmark
How quickly can you respond to a visual signal? Complete five valid rounds to get a more reliable average.
Tap or click the test area when the signal turns green. Keyboard users can also press Enter or Space.
Understanding the test
Reaction time is the interval between noticing a stimulus and beginning a response. Here, it is the time between the green signal appearing and your click or tap reaching the browser. The result reflects both human response and the technology carrying that response.
Each round waits a random two to five seconds before showing green. The browser measures from that signal using its high-resolution performance timer. After five valid rounds, the test reports your rounded average, fastest round, and slowest round. An early click cancels only that round.
Context matters
Display and refresh rate. The signal can only appear on a rendered frame, while display processing adds its own delay.
Mouse or touch input. Different devices, polling rates, wireless connections, and touchscreens add different amounts of latency.
Browser and system load. Background activity can briefly delay rendering or input processing.
Concentration. Fatigue, distraction, and anticipating the cue can all change your response.
Improve consistency
Common questions
For this browser test, 220–249 ms is classified as Very Good and 180–219 ms as Excellent. Treat categories as a practical guide, not a universal population ranking.
Yes. A 200 ms average falls in the Excellent band used by this test, especially when it is consistent across all five rounds.
Yes. A display updates in discrete frames, so refresh rate and display processing can change when the visual signal becomes visible.
It can be, but not always. Touchscreen latency, browser behavior, display refresh rate, and the device itself all contribute.
Attention and anticipation naturally vary. Hardware and background system activity also introduce small timing differences.
Start with two or three complete five-round tests under the same conditions. More attempts can help you understand your normal range.
Keep exploring
Respond quickly to changing color cues.
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