To fix
HP Printer not Printing in Color, first and foremost, make sure to use genuine ink cartridges as it's not possible for HP to guarantee the quality of non-HP ink cartridges. Another thing you can try is to clean the printer's printhead properly as a dirty printhead could be one of the main reasons for the malfunctioning of the printer. This error will also arise because of the shortage of ink color so check that and also check if the printer is running short of paper; if yes, then ensure that the paper tray in the printer settings must match with the tray loaded with paper.
Also Read:-Canon Printer Not Printing in Color
