Why are you throwing away so much of the gamut like this? You are ensuring that the best possible ratio is 10.9:1 rather than 21. Now, what happens if your user

Why are you throwing away so much of the gamut like this? You are ensuring that the best possible ratio is 10.9:1 rather than 21. Now, what happens if your user is outside and the ambient light on the screen makes what was dark much lighter? What happens when screen dimming kicks in and reduces screen brightness. You are likely designing on a very bright desktop monitor, effectively staring into a lightbulb all day. Turn down your monitors brightness instead of forcing everyone else to turn theirs up to match.