Color Match
Match the ink color, not the word. 30 seconds. How sharp is your attention?
How it works:
A color WORD appears in a different color. Click the button matching the ink color, not the word.
Build combo streaks for bonus points. Keyboard shortcuts: 1-6.
What is the Stroop Effect?
The science behind Color Match
The Stroop Effect was first documented by psychologist John Ridley Stroop in his landmark 1935 paper "Studies of interference in serial verbal reactions." Stroop demonstrated that the human brain processes the meaning of a written word faster than it processes its ink color — meaning that when the two conflict (the word "RED" printed in blue ink), a measurable interference effect occurs. You slow down because your brain has to actively suppress the word-meaning response to identify the color.
This interference engages the brain's executive function network — specifically the anterior cingulate cortex and the prefrontal cortex — the same regions responsible for attention control, impulse suppression, and cognitive flexibility. Regular exposure to tasks requiring this kind of conflict resolution may help maintain the efficiency of these systems.
The Stroop Test is used clinically in neuropsychological assessments to evaluate attentional capacity, processing speed, and cognitive interference — it's one of the most replicated findings in all of cognitive psychology. Our Color Match game adapts the classic paradigm into a fast-paced 30-second game that measures both accuracy and response time.
Read more: The Stroop Effect Explained — Science and How to Train It