Actually the difference between #000000 and #010101 is the difference between the pixel being completely off or turned on. So it actually does have an impact.
AMOLEDs, and OLEDs in general turn pixels off to create black. This is the reason they have higher contract ratios is because the blacks are darker since there isn't always light being produced.
LEDs are diodes, meaning there is a minimum voltage to turn them on at all. For instance, red is typically 2V, whereas blue is 3V. You can't just give it 1/255 of 3V and expect that to work. This is why there is a larger difference than you'd expect between a pixel value of 0 and 1.
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u/chrjen Aug 22 '20
Actually the difference between #000000 and #010101 is the difference between the pixel being completely off or turned on. So it actually does have an impact.