No, this is a casual mini-game for practicing color perception, not a diagnostic tool. If you need an accurate color vision test, please consult an ophthalmologist or a proper testing tool.

Every 5 correct answers raises your level by 1, and higher levels make the answer options more visually similar to the target color, increasing difficulty.

It exercises your ability to spot subtle differences between similar colors, so some people use it as a warm-up before design or art work.