A
correlation between one
octave of a
piano and
colors of the
visible spectrum:
Note Frequency | Color Color Wavelength (nm)
---- --------- | ------- ---------------------
G 396 hz | Violet 405
A 440 hz | Indigo 438
B 495 hz | Blue 473
C 528 hz | Green 527
D 594 hz | Yellow 580
E 660 hz | Orange 597
F 704 hz | Red 700