Frog or toad found in garden

Whilst removing a pile of dug up lawn from the garden today I found this frog in amongst the pile of grass and dirt. It was approximately 9cm long, not including it's legs. With the naked eye it looked a darker grey colour rather than blue, and the yellow on it was more of a canary yellow than yellow-cream. Originally it would have been under the ground. I moved it without touching it to the backyard where I have started a compost pile. I covered the frog over so it was hidden in the grass compost area. This may have been the frog I heard in the front garden the other night and heard it croak a few times but cannot be certain. At least it is safe now from predators and humans walking on the front lawn.