What kind of perennial is this?

I want this in my garden. Our gardening center thinks it's a geranium, but I don't think so. Its in several places in our neighborhood right now, and is blooming. I'm in western Oregon.
q what kind of perennial is this, container gardening, flowers, gardening, perennial, What is this Low growing perennial spreads mounds
What is this? Low growing, perennial, spreads, mounds.
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