This correlation is a derivative of a learning from a 75 minute participatory workshop I hosted where participants interpreted music into original visual compositions.
What was fascinating was when I presented music containing dominantly lower pitches, participants chose colors that were lower on the light frequency spectrum to represent it—vice versa.
Perhaps there is a relationship between how our minds interpret pitch and color.
Light and sound are both waveforms. The frequency of light determines the color(s) we perceive, and the frequency of sound determines the pitch(s) we hear.
This audiovisual exhibit is a correlative trial between color and pitch, where one can experience light and sound frequencies rise and fall in parallel.