In 2019, the most reported hate crimes in the United States were motivated by racial bias, particularly against Black or African American individuals. According to the FBI's Hate Crime Statistics report for that year, approximately 47.7% of reported hate crime incidents were motivated by race/ethnicity/ancestry bias, with the majority of those incidents targeting Black or African American individuals.
For precise percentages and breakdowns, it's best to refer directly to the FBI's annual report on hate crimes, as the statistics can vary slightly depending on the specifics of the data collection.