: Colors in PNG inconsistent between Windows and Mac I have a PNG file on my Windows machine of a proposed logo that someone sketched out in PowerPoint. I am tasked with making a master version

@Turnbaugh909

I know it's probably too late to solve your problem, but great explanation of issue is here hsivonen.iki.fi/png-gamma/ (for future reference...)

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@Nimeshi706

Before I say, "The people you're making this for couldn't see the difference if there lives depended on it".

I offer this: I think you're comparing Apples to Oranges, then trying to ask why things are different. The programs you're comparing are completely different (demographic, intended use), you shouldn't expect a seamless use between them - especially at the level you're examining color. You're also using an OS capture procedure to get your base image. I'd say your results are to be expected - they're pretty good.



I did what you did (screenshot the image above and opened Ps, then Ai - both were (181,10,0)). However, I did not get 181,10,0 in Ai until I chose RGB from the preferred color type from the File Menu. Place vs Open yielded different results as well.

(The color swatches above are in order as you have them in your question).

Comparing RGB values makes them seem that they're very different. Perceptually speaking, not so much.

EDIT:

I just caught one of your comments on @DA01 answer.

PNG retains color, JPEG is lossy...both true. BUT your OS isn't necessarily generating the highest quality/most reliable color file - it's snapping a quickie image for you. Your OS doesn't give you the option of PNG8, PNG24, DPI settings, JPG 80% quality, JPG 100% quality....all of those factor into the overall quality and portability of your file.

The screen capture wasn't built to be an industry-standard color manipulator like Ps, or Ai. When you're using those two programs your color choices become hard coded into the files (very easy to see if you create a spot color in either, then place the image into InDesign).

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@Fox8063795

Since it looks like you're only dealing with one or two colors I would explicitly choose the color values in Photoshop / Illustrator by using process colors - that's why Pantone makes them. So when you create your logo in Illustrator open one of the Pantone swatch libraries and choose your process colors from there. Process colors will work fine on the web as well - most folks aren't going to get out a color calibration tool (or are astute enough to say "hey - it looks like the logo displayed on your screen looks different from mine"); they simply accept the fact that different monitors look "different"

The only other option would be to try and force the same color profile across all your programs, but it sounds like you've already tried that.

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@Angela777

A bit of a wild way you could try, is to just wipe out gamma, icc and chromaticities text chunks in the internal PNG file header. This can be done with a free tool called TweakPNG. You might want to play with it...

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@Murray976

I would use a 3rd party tool like Color Pix to check the color values.

Also, I do know that older versions of PowerPoint (2003 and earlier) don't always accurately export slides as images. I've noted color issues, placement issues (items "moving" from where they were supposed to be on the canvas), and other little oddities.

You may want to find a better tool for making the PowerPoint -> PNG transition (or recreate it from scratch in Illustrator).

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@Cofer715

Yes, it can be a color profile problem. As a test, open it in photoshop, discarding the color profile info (you may need to set a preference to "ask me"), and then save a version.



I tried this and it didn't make a difference. The rendering intent in PS does not alter the eyedropper value.

I get the same values as you do in windows using both a print screen of the image as rendered in the browser, and the original png.

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@Holmes874

PowerPoint is not a proper graphics editing product so I wouldn't expect it to accurately render colors the same way as Adobe Illustrator will.

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