It's also important to understand that color spaces are used for medium to medium conversions.
Human perception is always a part of this but not always the goal.
For example in print a color space can be used to control how ink flows on paper. A lot of ink for dark colors on thin paper will result in a mess. That's why a color space converted image for such a print will look waay to light. But the result will be a good dark print.
And ofcourse this looks much better to the human eye.
Edit: I might be confusing the term color profile...
Human perception is always a part of this but not always the goal.
For example in print a color space can be used to control how ink flows on paper. A lot of ink for dark colors on thin paper will result in a mess. That's why a color space converted image for such a print will look waay to light. But the result will be a good dark print.
And ofcourse this looks much better to the human eye.
Edit: I might be confusing the term color profile...