Converting a Working Space

assigned to aRGB

sRGB

Assigning a Profile

. Neither RGB nor Lab values are altered.

. Image will look differently after new profile is assigned as RGB values are
  interpreted according to new assigned profile.

Converting a Working Space

If Rendering Intent is unchanged
. RGB values will change according to the
  new working space.
. Lab values will not change.

If Rendering Intent is changed
. RGB values will change according to the new working space and the new
  rendering intent used.
. Profile conversion compresses out-of-gamut colors, Lab values will be changed
  accordingly.