Introduced in the 1960s by Dr. Max Lüscher, the Lüscher color test operates on the principle that one’s color preferences and aversions—specifically among eight colors: grey, blue, green, red, yellow, violet, brown, and black—can provide insights into their psychological state. Some employers utilize this test to gauge job candidates’ compatibility. Additionally, psychologists might employ it as an instrument to better understand an individual’s present mental state.