Use the Contrast utility
 
 
 

For a description of the Contrast utility, see Contrast.

To change the contrast using the Contrast utility

  1. Map a texture to a material’s color.
  2. Map the colors you want to the Contrast utility.

    For example, map the Crease Color of a Leather texture. To do this, click the box next to Crease Color in the Leather texture’s Attribute Editor, then select Contrast from the Utilities tab in the Create Render Node window.

  3. Change the Contrast attribute settings as necessary.