No, Tab ( at least original Tab, and not that fake tab energy drink that they tried to market a few years ago) is just cola, so looks brownish like coke. It just had a pink label because of sexist marketing.
Sad they got rid of Tab. It was like the hallway point between a Coke Zero and a Diet Coke. It was also fun to have cause nobody knew what it was. Was available up until a few years ago. Have a few left. Gonna crack one for the day reddit died.