Stellaris colonize command

This command starts the colonization process of the selected planet using a copy of the pop with the ID given. Uncolonizable celestial bodies will not make colonization progress.
Command syntax
colonize <span class="parameter parameter-primary">Colonizer pop ID</span>
colonize 1
How to open the console in Stellaris
Press the ~ / ` key to open the command console. This key is located at the top left of the keyboard, usually under the F1 or ESC key. Type the command and press the Enter key.