Born in Budapest in 1913 to Hungarian mother Ilona (née Mednyanszki) and Muslim Bosniak father Vejsil-beg, Čolaković spent his childhood traveling around the region, and after World War I he settled in Sarajevo. He was a student of physics and mathematics in Budapest and history in Zagreb. Between 1931 and 1939, Čolaković wrote in the Hungarian and German languages. Between 1939 and 1941, his works were published by a number of magazines based in Sarajevo and Zagreb, such as Osvit (Dawn), Hrvatski misao (The Croatian Thought), Hrvatski narod (The Croatian People), Hrvatsko kolo (The Croatian Circuit) and Novi behar (The New Blossom). Čolaković also wrote a series of essays and reviews in which he advocated rights for Bosniaks. His comedy Moja žena krpi čarape was performed at the Sarajevo National Theatre in 1943 and later at the Banja Luka Theatre in 1944.