What color do most people answer when asked to name a color quickly?
I am not aware of any research on that specific question, although some might exist. This website suggests that the answer might be “red” since it is usually the first color name to evolve in a language after black and white. That makes some sense and is based on classic work on categorical color naming by Berlin and Kay. Another reasonable guess might be “blue” since that tends to be the most popular “favorite” color. You might also look into the research in this paper (Boynton, R. M. and Olson, C. X. (1987) Locating Basic Colors in the OSA Space, Color Research and Application, 12, 2, pp. 94-105.) in which people were asked to name colors as quickly as they could and people were quicker and more consistent when the using Berlin and Kay’s eleven basic color terms.
