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Hi all: I am an Illustrator and I screenprint my own works: I’ve been searching for a reliable way to simulate color overprints in PS but still no clue: traditional blending modes or fiddling with transparencies just don’t do the job: I have actually made a large set of test prints to actually compare real world results with my tests in Photoshop, with no consistent results up to now.

Someone tried to solve the problem here: https://prinfab.com/blog/simulating-a-screen-print-with-digital-print/

But that just does not work, in real world colors do not add up that way. Did anyone solved this before? Thanks![enter image description here]1

  • Well you could make a more accurate color profile. This is what they are meant to solve. But since your asking it sounds like you have no way of calibrating your devices in this way. – joojaa Jan 28 at 6:48
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In my limited experience multiply blending mode is one option to simulate stuff like duotones that will be printed in offset printing.

Is it accurate? It is good enough for me.


Here is the catch or catches in plural...

It does not exist to my knowledge any color profiling of a random combination of direct inks, add that different inks with different transparency coefficient and paper absorption.

You are quoting a silk-based print where traditionally the inks are NOT transparent.

I am not sure about this, but I think even offset print spot inks has not the same transparency over process inks.


I have only simulated duotones because I have indeed used them "a lot" (I am pretty sure more than most designers) on low-cost magazines, and we never expect an "accurate color" we expect good design and a nice look to it.

Here is an example.

enter image description here

Using a duotone was to save costs, but in other cases, the cost was first cut using lower quality paper, so, we never expected color accuracy.


In your case, it is probably a good idea to invest some time in making your own tests and compare them with a printed result.

You can probably make a "profile" for example, using a duotone blending mode, and then adding an additional layer to simulate the "real" output, making it darker, or lighter or a bit unsaturated.

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Have you tried it in Illustrator before? there is an option where you can overlay the different colors. Its called Overprint Mode enter image description here

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  • that might be a way, if I can import a bitmap and apply that function to the bitmap: I will try that, thanks! – Clockworkpictures Jan 27 at 11:06
  • As a further comment, this would be useful for preview purposes but would not let me draw in bitmap and have a preview at the same time – Clockworkpictures Jan 27 at 12:25
  • You can turn Overprint Preview on for all elements in the illustrator document, including bitmaps, from the view menu. View > Overprint Preview – superluminal Jan 27 at 17:30
  • This wont work you know, for it to simulate the overprint correctly it needs layers – joojaa Jan 28 at 6:47

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