The most common reason for HP Officejet printer not printing color is when there is issue with the ink cartridge. To change the ink cartridge, start the procedure when the printer is silent and idle. Remove the cartridge from printer by opening cartridge door. Contacts and nozzles are not to be disturbed and plastic tape is to be removed. Now, put the new HP cartridge in the printer and then put the plain colorless paper in the input paper tray. After that, turn on HP printer by clicking on power button. These are the steps that users need to follow to troubleshoot the issue of printer not printing in color.