One example: I worked on some software that would allow you to change the hue in one part of an image to match that of a color you selected. Originally this wa

One example: I worked on some software that would allow you to change the hue in one part of an image to match that of a color you selected. Originally this was done in HSL or HSV, can't remember which - but it worked perfectly. Then management got the idea that LAB would be more correct, and everything had to change. If you tried to change an intense blue to intense yellow it didn't work - the yellow was darkened to match the luminosity of the blue, so it bore no resemblance to the color you were trying to match.