A “perfect pair” means they match suit, colour, and rank. A coloured pair is one where the pair of cards are the same colour, too. To win the side bet, your starting pair of cards need to match.
At the same time, the house edge on the side bet is lower than it is on the main bet. This variation of twenty-one offers a side bet with a large payout. In land-based casinos, you’ll find this game offered most often in casino in the United Kingdom (London), and Macau.