When printing screenshots alongside black text, black areas of the screenshot look a washed out "muddy dark grey" and "washed out".

What causes this and can I improve the black color area?

  • 1
    awesome question, no idea about the answer, though i did once work on a CMYK press, i was just a grunt
    – ixtmixilix
    Commented Jan 5, 2011 at 15:09
  • Without more software details, I couldn't give anything but a generic answer. Commented Jan 5, 2011 at 15:58
  • 1
    Nice! I think this is the kind of question Graphics.SE needs to attract the right people.
    – Pekka
    Commented Jan 8, 2011 at 12:00

5 Answers 5


During the RGB ⇒ CMYK conversion your RGB(0,0,0) values are probably converted to Rich black = CMYK(63,52,51,100) or such; and looks washed out when compared to Plain black = CMYK(0,0,0,100)

Solution is to fine tune the RGB ⇒ CMYK conversion.*

See also: Rich black versus plain black and gd.se question: What is the difference between CMYK and RGB?

*) To maximize black (= K = Key) in Photoshop: Edit → Convert to profile → Custom CMYK... → Black Generation: Maximum

But this and other settings should, of course be set according to your media and printer.

  • Thanks! I'll check exact CMYK values post conversion and come back...
    – e100
    Commented Jan 6, 2011 at 13:49
  • OK, I've now checked and my out-of-the box Photoshop install converts RGB black to c75 m68 y67 k80. I kind of knew what the problem was, but didn't know how to resolve it. Thanks!
    – e100
    Commented Jan 9, 2011 at 16:56
  • I don't understand this answer at all. How can rich black ever end up looking muddier or more washed out than pure 100K black? It's usually the other way around... Commented Sep 1, 2017 at 7:51

Koiyu's answer would fit if you are talking about sending to a printing press, but I suspect you're outputting to an inkjet printer. In that case, the answer is almost the opposite, because there is no CMYK conversion involved.

I'm going to assume that your screen grab is genuinely black. You can check that in Photoshop, as JAG2007 describes, but a screen grab of RGB 0,0,0 will come into Photoshop as RGB 0,0,0, regardless of Levels or Contrast settings. Contrary to his suggestion, though, I recommend you don't mess with Levels adjustments or any other kind of image manipulation for screen grabs unless they are screenshots of actual photographs.

Here's the problem: the printer driver interprets "plain black" text as black and always prints it totally black. Printer manufacturers has take considerable pains to make sure that black text prints truly black, to avoid customer complaints(!). Text comes to the printer driver as actual text, so it is easy to recognize and handle in a special way. Image data is entirely different. The black in your screenshot is NOT black in the printer output because it's an image, and the color space and color profile you are using don't render it as a true black. The result is the muddy excuse for black that you're seeing.

The answer is to use the correct color profile for your printer and for the paper you're printing on. How you select it will depend on whether you're on Mac, Windows or Linux, and the capabilities of your printer, so I can't give you specific guidance. Canon, Epson and HP all have excellent help on the subject on their websites.

Your image is almost certainly in the sRGB color space, since it's a screen grab. Be sure that the document you're including it in is ALSO in that color space, or you'll have problems with color and with black. (If you're using MS Word or similar, it is sRGB.)

Then there's the matter of color profiles.

If printing from Photoshop, be sure to turn on "Black Point Compensation" or its equivalent, and use "Relative Colorimetric" or "Perceptual" for Rendering Intent, otherwise RGB black from the image won't print as black.

In Photoshop or InDesign, select either A) "Printer Manages Colors" (in which case you will use your printer dialog to specify the type of paper and the color space of the incoming data), or B) select "Let [app] Manage Colors," specify the correct color profile in the application's print dialog and (very important!) turn OFF your printer's color management.

If you're printing from Word or some other program that is oblivious to color management, use A) above and cross your fingers...

For desktop printing, ignore CMYK. It's irrelevant because desktop printers (despite the fact they use Cyan, Magenta, Yellow and Black, plus perhaps some other colors) are RGB devices. They "think" in RGB and not CMYK. There are good reasons for this, the most basic being that an inkjet can usually print a much wider range of colors than a CMYK printing press, so the CMYK color gamut would only limit what the printer is capable of.

It's only when sending files for printing on an offset press that Rich Black becomes an issue, because then you are going to a true CMYK color space. Plain black (CMYK 0,0,0,100) is not black; it's dark grey. When you want something to appear genuinely black, you have to use a "Rich Black" or "Built Black," which is a combination of 100% black with various percentages of C, M and Y. (To give you the idea, my business card has ghosted lettering in a black background. The lettering shows up dark gray because it is 100% Black only, surrounded by the very black "Rich Black" of the rest of the card.)

  • 1
    +1 for "For desktop printing, ignore CMYK" ... can't be overstated. Alan's answer should be read by all ... Relatedly, expensive CMYK RIP software is a ripoff, unless you're doing some serious soft-proofing for a specific press.
    – fish2000
    Commented Aug 13, 2011 at 17:36

You can always just tweak the levels or contrast of your image in Photoshop.

To tweak the levels go to Image > Adjustments > Levels... and eliminate any blank space on the fringes of your black/white range by notching the sliders inward accordingly. (Not a real exact science, but you get the idea...)

To tweak the contrast, either go to Image > Auto Contrast, and let Photoshop adjust the contrast automagically, or go to Image > Adjustments > Brightness & Contrast and use the slider to manually adjust.

Also +1 to Koiyu's response which is the true techincal answer. Make sure you understand what "Rich Black" is, and how it is created.


Text in screenshots and snips came out green, not black. It was driving me crazy. Wish I understood PHOTO SHOP, but I don't. I use PAINT. Very simple. The above comments make sense that this is a picture, not text.

So, even though there is no contrast control, when you save the screen shot as an image (png, etc.), then open it with PAINT. Click on FILE, and scroll down to PROPERTIES. It gives an option for changing the image properties from COLOR to BLACK and WHITE. Warning: It is VERY black.

  • Check the accepted answer and you'll see that there's a better solution. A screenshot is an image, and it doesn't need to be converted to B/W to print properly.
    – Luciano
    Commented Aug 29, 2016 at 8:51

The minimum ppi for print is 300. One's screen is only 72 ppi. You can tweak it until your blue in the face: 72 is just not enough material to work with. On paper, the eye can tell. You may be able to resample and reduce the size of the image, and if it's simple line art, you can maybe get something tolerable. But really, the only solution I know of is to not ever plan to use screen shots for print.

  • 4
    This is a question about colour; this answer is about resolution. It j
    – e100
    Commented Sep 23, 2015 at 16:26

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.