There is little to none change in the blue light amount
Although when talking about brightness you should make sure that you are using your monitor without PWM Flicker
That, in its essence, is your monitor turning on and off again hundreds of times per second:
That is the main cause of eye pain when spending a lot of time at the computer
If you want to remove the flickering completely you can download Iris which is the only software that is able to completely remove the PWM flicker of your monitor
You can test your monitor here:
