So I have this image that I have as the background of my phone
but the way the lock screen is made makes it so that theres a slight dark overlay over the entire screen (for legibility of screen text), seen below.
Based on the rgb values I've concluded that the overlay causes the image to have 70% of the original image's brightness (reproducible by filling the image with black and setting the alpha to 77 out of 255), so is there a way to alter the original such that placing the overlay over the image would make it look like the original (with if not exact, almost-exact colors)?
I've been trying to figure this out for hours with no luck so maybe someone else could help...