- Mar 25, 2016
if you go to wolframalpha's wavelength to color widget here are the 495 and 500 wavelengths.~500nm is ok. 495 is where it's at. Look for one of those.
I think they're pretty much the same but if you look at the difference between 500 and 520, now theres a difference (shown below)
you will see how just a few nm at around 493 makes a huge difference, here are the respective wavelengths from 490 to 495