In the standard version of Monopoly, the property groups and their corresponding colors are as follows:
Brown (Dark Purple): Mediterranean Avenue and Baltic Avenue
Light Blue: Oriental Avenue, Vermont Avenue, and Connecticut Avenue
Pink: St. Charles Place, States Avenue, and Virginia Avenue
Orange: St. James Place, Tennessee Avenue, and New York Avenue
Red: Kentucky Avenue, Indiana Avenue, and Illinois Avenue
Yellow: Atlantic Avenue, Ventnor Avenue, and Marvin Gardens
Green: Pacific Avenue, North Carolina Avenue, and Pennsylvania Avenue
Dark Blue: Park Place and Boardwalk
These property groups are an essential part of the Monopoly game board and play a significant role in the game's strategy and gameplay.