I believe the person will probably have a cleft chin, brown eyes, and brown hair. Haven’t done bio in a while but two cleft chins, as far as I know, will result in a child with a cleft chin; the hair would be brown since brown hair is a dominant trait over blonde hair. The eyes will be brown since brown eyes are dominant over blue. All of this combines the create a person with a cleft chin, blue eyes and brown hair.
(Of course these variables change based on more complex lineage and such but when it comes to the basics I THINK that’s correct?? Again been a while but hope I could help LOL) :)
