Gradient is a board game to put your color perception to the test.

Gradient consists of two magnetic boards and 150 double-sided magnetic pieces. Two players compete against each other to see who can complete the spectrum more accurately. There are three rounds, each starting with a different setup. For each round, both players have one minute to fill in the blanks. When time's up, the tiles can be flipped over to reveal the numbers to check and compare the accuracy.