The Scarlet-breasted Dacnis is recorded in humid lowland forest in southwestern Colombia. It searches for fruit and insects in the canopy.
The male is mainly blue with a scarlet breast. The female has greenish upperparts and paler underparts.
It forages in pairs or small groups in the treetops, taking fruit and insects. It also occurs in secondary forest and at forest edges.
An extinction-risk assessment has not been added yet.