And the moment you change the angle of vision between your eyes and the display what you thought was correct a moment ago no longer is. This is a mugs-game. Calibrate the display for white point, black point and Gamma, run the profiling software, then load an image with known reference colours and adjust the display brightness to approximately match how that image would look correctly printed. The Outback Photo test image is a good one to use; so is Andrew Rodney's. Anything more than this won't buy you much. Doing colour-critical work from a laptop is not generally a great idea.