This grower is fairly sure of this plant identification.
nice sized clumps...
Veronica gentianoides (Speedwell). This is a mat-forming perennial with basal rosettes of lance-shaped, scalloped dark green leaves. In early summer, shallowly cupped terminal racemes of pale blue flowers are borne.
They are moderately frost hardy.
Ground cover, walls, rock garden
Italics = data drawn from parent genus or speciesView Full Plant Finder Record