Heuchera 'Dolce Key Lime Pie'
The bright green and the shape of the leaf will provide a nice contrast as a foreground plant to either a darker, reddish Heuchera, or a blue Hosta.
Looks to be fairly vigorous too, judging by the size of the plant.
I had great hopes for Heuchera Key Lime Pie, but they somehow never quite panned out this year. It's doing alright here on October 8th, but to me in this condition it is still like a dream unfulfilled.