The colorful puffleg (Eriocnemis mirabilis) is an Endangered species of hummingbird in the "brilliants", tribe Heliantheini in subfamily Lesbiinae.

[3] It is closely related to the emerald-bellied puffleg (E. aline) and they have variously been deemed sister species or a superspecies.

Both sex's leg puffs are white with cinnamon tips, though the female's are smaller than the male's.

[6] The colorful puffleg is known only from a few locations on the west slope of the Western Andes in Colombia's Cauca Department.

As of early 2022, Cornell University's Macaulay Library had no recordings of colorful puffleg vocalization, and Xeno-canto had only three.

[6] The IUCN originally assessed the colorful puffleg as Threatened, then in 1994 as Vulnerable and in 2000 as Critically Endangered.