Lab colour displaying differently in a single Indesign document

[fiona16B8]

I am doing a layout using a LAB colour swatch and the colour is displaying differently on different pages of the same document. Other colour libraries – CMYK, RGB, Pantones – are fine, but this is totally weird. 

[Test Screen Name · Accepted solution]

Random thought: does it display differently depending on whether the page has transparency? Check the transparency blend space, it's going to need to be RGB for reasonably consistent display of Lab colour,

[fiona16B8]

It does! Using the Flattener Preview I found the trqnsparent object. Mystery solved, thank you!

[Eugene Tyson]

Any transparencies on the page?

[fiona16B8]

Thanks, Eugene – per my reply above, it does, and using the Flattener Preview I found the transparent object. Mystery solved!