Multi coloured flower

Is this a Geranium? I've seen variagated leaves and flowers but
I've never seen a flower with two separate colour petals before.

[Hazel]

It's a dahlia which often have two colours in the petals. A pretty one.

[John&Ann]

@quietpurplehaze Thanks Hazel , I enjoy the flowers but useless at their names.

[JackieR]

A harlequin flower

[Dave Morris]

Wow! Never seen this before...