There are a lot of similar games, eg https://trycolors.com/games/guess-color https://trycolors.com/games/guess-color I use them in my code club to teach about

There are a lot of similar games, eg https://trycolors.com/games/guess-color https://trycolors.com/games/guess-color I use them in my code club to teach about what is light, actually, how do we perceive color, how tv and computer screens 'trick' your color perception by simply mixing RGB in the right proportions, etc.