Erinus alpinus

Erinus alpinus, the fairy foxglove, alpine balsam, starflower, or liver balsam, is a species of flowering plant in the family Plantaginaceae, native to Central and Southern Europe.
It is a semi-evergreen perennial, with stems of narrow blue-green leaves and clusters of rose-pink flowers at the tips in spring and summer. It is popularly grown in rockeries or alpine gardens; and it occasionally becomes naturalised outside of its native range, especially on old stone walls, shown well from a well-known location for this species on the old packhorse bridge at Carrbridge in the Highlands of Scotland 
It has gained the Royal Horticultural Society's Award of Garden Merit.