According to 2,099 hiring managers and human resource professionals who participated in a CareerBuilder survey, blue and black are the best colors to wear to a job interview, and orange is the worst.
Conservative colors, such as black, blue, gray, and brown, seem to be the safest bet when meeting someone for the first time in a professional setting, whereas colors that signal more creativity, like orange, may be too loud for an interview.
Red is the most powerful color, but consider whether you want to outshine your interviewer. This, of course, depends on what role you're interviewing for and the culture of the company.