Object with gradient changes based on background color

[Alessandra2924455988pf]

 

 

I recently created my first complex/realistic eye that I am using for a logo design. My problem occurs when I change the background of my design and place the eye on top of it: The overall appearance and color of the actual eye changes with every color put behind it besides white. I grouped all of the layers of the eye together so that I could easily transfer it to another document so I don't know if that has something to do with it. The eye changes even if I put the background color in a separate layer underneath all of the eye elements. It has something to do with the gradient. Please help! I'm extremely frustrated. 

[Met1]

It probably has transparency.

Put a white circle behind the eye, but in front of your background.

[Ton Frederiks]

It has some transparency or effect applied (indicated by the grey filled circles in the right column of the Layers panel).

Try grouping the eye objects and in the Transparency panel choose Show Options and click the Isolate Blending checkbox to restrict the transparency to the group objects only.