I find it interesting that the various shades of a given color are slightly different from those generated by the Harmonia extension. For instance, a lighter shade of the #00a33d green swatch is #34d16f using the monochromatic color scheme generator, but is #33b563 using Harmonia. Does anyone know which is "correct" and/or why this discrepancy exists?
Possibly different color models? In which case, they could both be "right."
Use whichever one you think looks better.