Dark leaves and has mauve bracts of flowers in Summer.
SOLVED: Plant ID, Please
A cordyline I would think. Ti plant. I only am really familiar with Cordyline fruticosa cultivars but this looks more like a species. Maybe Cordyline fruticosa. Google the flowers and see if the same as you remember. You could call them mauve.
ZilyZily, thank you for your input!
Cordyline fruticosa 'Negra' - https://davesgarden.com/guides/pf/showimage/483701/