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I have some listings and some portions of text, that need (or at least i want them to have) a colored background. At the moment i'm using blue!5, which gives a nice color on the screen, but has the effect, that my printer uses (visible) dithering when printing that background, which makes the background-color look noisy/distorted.

So is there a rule/'best practice' for choosing colors, that does not need to be dithered by the printer? Or at least reduce the 'amount' of dithering needed to print that color?

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I guess thats really printer depend and a 5% blue is really light so it’s hard for the printer to create it, which results in dithering. I don’t know a way to prevent this for consumer printers … –  Tobi Jul 22 '13 at 10:03
from the print i can see, that the printer actually uses a lighter blue and then darkens it with some dark/black dots. –  MaPePeR Jul 22 '13 at 10:25
Hm … then you’ll have to try&error until you find a blue that can be printed by your printer. But the results will be very different on different printers … –  Tobi Jul 22 '13 at 10:48
Is you blue an RGB or an CMYK color? I guess you will get better results with CMYK ... –  Kurt Jul 22 '13 at 10:51
'My' blue is from the [x]color-Package. I hoped for an answer like: "Most common Printers these days use CMYK-Colors and can add each color component in x%-precision.". Thanks anyways. –  MaPePeR Jul 23 '13 at 6:44
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