Botanical name: Centrosema sp.
Common name: Butterfly Pea
Family: Fabaceae
Subfamily: Faboideae
Origin: Tropical America
The Centrosema is a fast-growing climber with fine foliage, pinnate leaves, a great plant for attracting butterflies.
Another species, Clitoria, is similar but the latter has a tubular calyx that is much different from that of Centrosema.
Link to this plant:
https://toptropicals.com/catalog/uid/centrosema_sp.htm