ShadeMatch doubles as a colour-vision study at Semmelweis University. The question behind the game: how precisely do people perceive and judge colour differences on their own, everyday screens? Every round you play is one data point. This page shares the picture so far — it refreshes as the dataset grows.
When players give up on a colour, they judge the remaining difference. Pairing that judgment with the measured colour error (ΔE) maps where perceived sameness begins — the heart of the study.
Ranked by how rarely attempts end in a perfect match (colours with at least 10 attempts).
You are identified only by a random ID; your email is never linked to published results. Findings will be published openly, and this page will always show what your contributions are teaching us. You can withdraw your data at any time.
These are descriptive statistics from gameplay on uncalibrated screens — interesting signals, not medical measurements.