How to differentiate between a rosy or peachy complexion?

[WillowMother]

Sorry if this is a stupid question! I went to ALDI today to buy some of their concealer as it has been recommended to me on here. There are two shades - for either a rosy or peachy complexion. I was stuck but opted for rosy - how can you tell what complexion you have? Thanks

totally uneducated guess here, but presumably peachy would be a pale complexion, with a yellow undertone, whereas rosy would be pale with a bluish undertone?

Thanks. I think I have bought the right shade, tomorrow will tell when I try it!