I wonder if this is the endemic Viola flettii (Olympic Violet)? It was gorwing at about 6,000' by the road to Obstruction Pt.
Violaceae /vaɪəˈleɪsiː/ (alternatively Alsodeiaceae J.G.Agardh, Leoniaceae DC. and Retrosepalaceae Dulac) is a family of flowering plants consisting of about 800 species in 21 genera. It takes its name from the genus Viola, the violets and pansies.