The complex functional pigment according to the present invention can effectively functionalize paints while minimizing the content of pigment added to a paint composition, that is, the solid content of a paint composition, for functionalization such as heat insulation, sound insulation, beautification, weather resistance, durability, chemical resistance, antibiotic properties, surface hydrophilization/hydrophobicity and the like, and even when added in a high content in the paint composition, it has an effect of excellent dispersibility. In addition, since the color realization area of a coating film is wide, various colors can be implemented, and it also has an effect that it is easy to adjust to the desired color.

A process for preparing a composite containing submicron sized particles of metal oxide pigment and a natural-based organic compound is disclosed. The process includes a step of grinding a metal oxide pigment and a oligomeric and/or polymeric carbohydrate together by means of a ball mill, to obtain a pigment composite containing particles having a submicron granulometry and an outer surface partially or completely covered by the oligomeric and/or polymeric carbohydrate. A pigment composite including pigment particles having a mean hydrodynamic diameter smaller than 1 m is also disclosed.