this looks like the original plant is the yellow-centred one, and the larger blue leaves are a reversion. it's pretty hard to ID from partial and young leaves that you have there...part of IDing is in the leaf shape, how it falls, the shape of the entire plant, and seasonal changes in colouring. i'd recommend splitting the 2 colours apart because the larger blue reversion will likely be more aggressive and eventually overpower the original plant. you can post more photos on the Hosta ID facebook page. they're pretty great at helping!
