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42 votes

Why is CMYK & PNG not possible?

Why? Because PNG is a lossless raster image format developed for the web, and ultimately for display screens which are RGB. However the format was never intended or designed to be a print format, ...
Billy Kerr's user avatar
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40 votes

How are the publishers able to print book covers in neon colors?

Simply they do not print with CMYK, instead they use spot colors. Spot colors are pre mixed inks and require a printer to print with one more ink. Its a bit like going to a paint shop and ask for a ...
joojaa's user avatar
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28 votes
Accepted

How to make my logo color look the same in Web & Print?

here is the technical answer Saying that the color is #dd0017 is meaningless, unless it is paired with information about what color space you are using! Therefore also conversion from #dd0017 to CMYK ...
joojaa's user avatar
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23 votes
Accepted

Why is Photoshop changing my CMYK numbers?

You have "Only Web Colors" selected. Turn that off as its essentially irrelevant on modern computers. It's trying to figure out how to best represent 50% K in a vastly reduced RGB palette known as Web ...
Ryan's user avatar
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20 votes
Accepted

where does black come from in CMYK color mode?

It comes from: 1. The imperfection of inks An ink is made from available materials, which need to be affordable, safe, reliable, etc. and they need to give reasonable results. With the current ...
Rafael's user avatar
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19 votes

How do I ensure a CMYK cyan that works in Red-Blue stereoscopic printing?

Sadly, these very saturated colors can't be reproduced in CMYK. You could try to make the image in CMYK mode, where you make sure that the red is CMYK(0, 100, 100, 0) and the cyan is CMYK(100, 0, 0, ...
Wolff's user avatar
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18 votes

How are the publishers able to print book covers in neon colors?

There is a lot to unpack here. An illustrator made a beautiful cover for me in neon, but when we converted the cover from RGB to CMYK what was neon became matte. No. He did a beautiful cover for you....
Rafael's user avatar
  • 36.8k
17 votes

where does black come from in CMYK color mode?

C = Cyan M = Magenta Y = Yellow K = Black B was not used as an abbreviation because it could be confused with "blue" from RGB, or "blue/yellow" from L*A*B In addition to being an excessive amount of ...
Scott's user avatar
  • 208k
15 votes

Why is CMYK & PNG not possible?

Broadly speaking there are two schools of thought on file-format design. One is that you should have lots of options to give lots of different users what they want. The problem with this approach is ...
Peter Green's user avatar
13 votes

Photoshop automatically corrects my color

... if I try to assign a text the color #00FFFF it automatically sets it to #6FCCDC instead of converting it to CMYK. It is converting it to CMYK... CMYK and RGB have a different gamut, so ...
Cai's user avatar
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13 votes
Accepted

Is there a loss of quality when converting RGB to HEX?

As Billy Kerr wrote, Hex is not a colour space, but a numerical system such as the decimal system, but with base 16. The differences you notice are probably caused by different RGB colour spaces (such ...
John Doe IV's user avatar
12 votes
Accepted

Can a GIF have a CMYK profile?

There is no mention of CMYK in the GIF specification, and it only supports color triplets. Take a peek at the syntax for color tables given by the spec: 7 6 5 4 3 2 1 0 Field Name ...
JohnB's user avatar
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12 votes

Can a GIF have a CMYK profile?

The short answer is no, a GIF can't support a CMYK profile. A CMYK profile is a series off curves that map the percentage value of each separation to a target. GIF images are saved as INDEXED COLOUR,...
Westside's user avatar
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12 votes
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What would happen if I made something - CMYK 100

I can't really claim to know much of anything about mixing house paint.... It's my understanding though that the mixing system is more akin to a Pantone mix than a CMYK mix. On screen, it would be ...
Scott's user avatar
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12 votes

How to check if a PDF file is in RGB or CMYK?

A simple way is opening the PDF in Adobe Acrobat and checking out Overprint Preview. The button looks like this: It opens this window: Under Show you can filter which color mode you want to see. Set ...
Wolff's user avatar
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11 votes
Accepted

Photoshop colour picker with only colours within the printable gamut?

Go to View > Gamut Warning (or hit Command-Shift-Y) to turn on the Gamut Warning feature. This will 'grey out' colours that are not available in the current gamut. Command-Shift-Y will also toggle ...
Westside's user avatar
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11 votes
Accepted

How heavy should ink coverage be for a custom CMYK rich black?

There is no answer to your question as such: everything above C0M0Y0K100 is darker than process black. However, consider that 100% ink means that your printer fills the entire raster, while 25 fills ...
joojaa's user avatar
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11 votes

Is there a loss of quality when converting RGB to HEX?

I will only complement the other answers. RGB to HEX will give you the same exact color. RGBA to HEX, will not because we do not even know what is beneath the color. If you put another color the ...
Rafael's user avatar
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11 votes

When is it really worth it to convert RGB to CMYK (If printers do it anyway!)

The RGB gamut is larger than the CMYK gamut. It is exceptionally possible to have RGB colors which can not be reproduced via CMYK inks. Auto-conversion will use a "best guess". These guesses ...
Scott's user avatar
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10 votes
Accepted

Pantone CMYK Values don't add up to 100 - How to make the ink mixture?

CMYK colours rarely will add up to 100, and there is no reason they should. Each of the numbers in CMYK (xx,xx,xx,xx) ARE percentages of coverage of each colour, Not ratios of the total. A lot will ...
Digital Lightcraft's user avatar
10 votes

where does black come from in CMYK color mode?

I have added this answer, although it covers what has already been said by others here, to give you a visual aid to understanding the issues. Green doesn't need to have black or magenta in it. These ...
Billy Kerr's user avatar
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10 votes

How do I ensure a CMYK cyan that works in Red-Blue stereoscopic printing?

If you MUST use Cyan and you want something around RGB saturation then you need to work with paper. There are some that reacts very well to certain paints and give them extra boost. They are also ...
SZCZERZO KŁY's user avatar
9 votes
Accepted

Help me understand how the "RGB Colorspace Atlas" by artist Tauba Auerbach was made

The title of the article 'Tauba Auerbach’s RGB Colorspace Atlas Depicts Every Color Imaginable' is misleading. As you already said RGB is intended for screen display and not print. It is - as far as ...
Cai's user avatar
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9 votes
Accepted

Why is Illustrator changing my CMYK numbers?

Your document might be set up as RGB. Check that via 'File → Document Color Mode' and switch to CMYK if needed. Then update your objects again to use CMYK values.
Lucian's user avatar
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9 votes
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Text over background colored getting a weird yellow border

It's caused by anti-aliasing, used by Illustrator to display graphics without pixelated edges. However, anti-aliasing causes display artefacts when two colours butt up against each other. The problem ...
Billy Kerr's user avatar
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9 votes
Accepted

I sent a large Illustrator file to another person. Why are images missing? What image format should you use to place images?

In Illustrator... Open the Links Panel. Linked images have no icon to the right of the name in the Links Panel.... Highlight a linked image and choose Embed Image from the panel menu. Embedded ...
Scott's user avatar
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8 votes
Accepted

What colour space should I use for printing a plastic bag?

The design you describe would likely be printed using spot colors. One of the most popular spot color library is called the Pantone Matching System (PMS), if you're using Photoshop or Illustrator then ...
JohnB's user avatar
  • 20k
8 votes

How to make my logo color look the same in Web & Print?

Matching colours between screen and print is a complex and sometimes impossible task. Due to the nature of light (Screens, RGB) versus ink (CMYK, Pantones, etc) and the fact that pretty much every ...
Westside's user avatar
  • 9,523
8 votes

Photoshop: how to change from RGB to CMYK without any color loss

No, you can't expect RGB colors to translate exactly to CMYK for printing. Monitors make colors with light. Light can be any intensity. Ink is made of solid physical colors from things like rocks, ...
user8356's user avatar
  • 1,075
7 votes

What tools can I use to create Fractal Art?

Here's a comprehensive list of the best software/online tools available right now Incendia Fractals - Donationware The application includes multiple 3D editors for design and process Fractals as ...
Stegathesaurus's user avatar

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