Violet

Yes, these are the dreaded "flatforms". But, I think Asos showed just enough restraint on these sandals to keep them kind of cute. Would I love them better if they were completely flat and without a 5cm/2 inch flatform. Absolutely! But I do like the striped canvas uppers with the raffia sole and the double bow on top. So that's like three pros against one con.
If you can handle the flatform, they're €49, which personally I think is a tad overpriced for a simple Asos sandal. I'm currently working on a blog post about the Asos pricing lately, since I've found a bit of a grievance with them lately. If you're willing to pay that much money though, you can also go for the black polka dot or a flowery version.