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Spot colours & multiplying them

Spot colours & multiplying them

Spot colours & multiplying them


I'm going to design a poster with just 2 spot colours, I named them Blue and Red. Blue is C:85 M:75 and Red is M:100 Y:95
There is a multiply effect that overlaps these 2 colours. So when I defined the spot colours in Adobe Illustrator or Photoshop and compared it with process colours with the same values I got the result showing in attachment.

I am going to print this and I don't know if I use 2 spot colours will I have the exact overlapped multiplied colour or just an strange mixed colour? (Left or right?)

Is it even possible to have multiply effect with just 2 spot inks?

Great day and many many thanks in advance,

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