Design tip: There is no such thing in the real world of materials and displays as pure black or pure white. Even if we had pure black and white, the real envir

Design tip: There is no such thing in the real world of materials and displays as pure black or pure white. Even if we had pure black and white, the real environment of the user would tweak the white balance. The same design or page, taken from a dark bedroom to an office to bright sunlight will range from unusable through fine (and maybe back again). So a designer can say #000 against #fff is too high-contrast for some environment, but some users will be in environments where it is not.