Colour of final render changes when complete

Hey guys,

I am having trouble with the final render. Everything looks ok during the actual rendering process, the tiles match the preview in colour and contrast UNTIL the last tile is completed. Then the whole image suddenly changes, it gets darker and discoloured to a slight blue/purple tinge.

Please advise,

Thanks

Check the compositor for any post processing nodes
Check the sequencer for any post processing settings

Have you changed any of the Scene / Color Management settings ?
Supply screenshots and example blend files