[fortnum]

Thanks, that's exactly what I am wondering

Is #010101 effectively #FFFFFF or does it actually use less energy the darker it is? With LCDs we know it is the former, but what about OLED displays?

[danudey]

The brighter the pixels are, the more power they are using. A pixel uses 0 power at 0 brightness, and it goes up from there.

[fortnum]

Well, with LCD it does not matter. It always uses the same power. Hence the question.

So you are confirming that the statement is actually wrong. The darker a pixel on OLED, the less power it uses. Right?

[smoldesu]

I'm not sure. Considering what I know about OLED, I'd assume that #010101 consumes considerably more energy than #000000 since it needs to emit light for that individual diode. The energy efficiency from there will mostly depend on the brightness/size of the display.

[fortnum]

But does it use less power than #FFFFFF?

[smoldesu]

Yes, but it's efficiency scales with the overall brightness of the display. True OLED black will always consume the same amount of power, regardless of brightness.