I don't want to trigger another thread about this old image, but I will point out that there are significant differences in monitor gamut and gamma across devic

I don't want to trigger another thread about this old image, but I will point out that there are significant differences in monitor gamut and gamma across devices. Some cheap laptop LCDs crush blacks and whites significantly if you aren't looking at perpendicular dead center. It is for this reason that using light blue or light yellow backgrounds to demarcate ads is sinister -- one can A/B test their marker into literal invisibility for many users.