I think
Cora and
Indigo is ok.
I think stylistically,
Cora and
Indy or
Indie makes more sense. You may also like
Cora and
Ivy,
Cora and
Iris, or
Cora and
Isla.
Cora and
Isabel,
Cora and
Ivory, and
Cora &
Imogen work too.
Cora Paloma &
Indy Philippa ...
Cora Penelope &
Indy Paloma ....
Cora Paisley &
Indy Paulina ....
Cora Paisley &
Indy Philippa
Cora and
Helena work well together.