Object formats that support vertex painting?

A very easy question for someone who knows, but next to impossible to find out if you don’t.:eek: What export formats does blender have that support vertex painting?

I heard that obj does not support it; is this so? If not, is there another one that does? All I’m doing is exported static, UVmapped meshes, and I need a format that will support the vertex painting on the meshes as well.