A rendering method used to preserve the visual color relationship as it is perceived by the human eye, and in which, thus, the color values themselves may change.
The perception-oriented (perceptual) rendering intent reproduces the image taking into consideration paper, dynamic range and color characteristics of the output system, so that that the human eye perceives the image in the destination system (CMYK) true to the original.
In color space conversions, one can choose from perceptual, absolute colorimetric and relative colorimetric.
With perceptual all colors are shifted and compressed until the colors of the source color space fit into the destination color space.