The IFAB is considering adding a blue card, in addition to the yellow and red ones. A blue card would expel players for 10 minutes (of the 90 that a match normally lasts), for example, who protest their decision or disrespect an opponent.

The IFAB introduced blue cards in amateur football in the United Kingdom in the 2019-2020 season. The measure applied at the amateur level of referees carrying cameras to record possible incidents was also considered a success. In January 2023, another type of card, which is not yet universal, was applied for the first time in Portuguese football.