Colour change on preview image
Hi, can anyone help?
I am a graphic designer (25yrs +) specialising in book design and one of my clients has just posted their publication for sale on Lulu using the artwork I supplied for them. The issue we have is that the original background colour on the cover has changed somewhat. The colour it should be is a medium light green but on the preview, it now looks like a really bright flourescent green - not at all like the original.
The cover file which was uploaded was a high resolution pdf created using the pdf joboptions file that Lulu supplies via a download. This was output from InDesign with all colours converted to CMYK.
My thinking is that the cover colours have been converted (badly) to RGB by the preview generator. I have some experience in setting up online Digital Asset Management Sytems and we have from time to time come up against a similar problem when the automatically generated previews for images use the wrong color profile – RGB instead of sRGB. It appears something similar is happening with this book cover.
Can someone advise how I can fix this please?
I've atatched jpegs of the original and the Lulu version to show the comparison and this is the link to the book: