On 10/10/06, Alan Bowen wrote:

If this is OT, my apologies to all.

I am currently using ConTEXt to produce PDFs with a colored background which I specify using R G B settings. Unfortunately, this background does not look the same when others open the files on their computers. Is there anything I can do at my end to correct this?

There are well-known differences between various computer brands, and individual PC's generally vary widely. If you need really good agreement, then all the systems need to be viewed under similar light conditions and calibrated (e.g., using a colorimeter, or at least the GretagMacbeth ColorChecker, a printed chart) and you want to generate PDF's with a specific colorspace (not just deviceRGB). For most purposes, it seems to work to use a rough "sRGB" setting where you adjust the monitor (brightness, contrast) to approximate gamma=2.2. Check this with: http://www.normankoren.com/makingfineprints1A.html#Monitor_test_pattern. Many LCD's and worn-out CRT's like the ancient NCD on my desk will fail even this simple test. -- George N. White III Head of St. Margarets Bay, Nova Scotia

Am 2006-10-10 um 13:52 schrieb Alan Bowen:

I am currently using ConTEXt to produce PDFs with a colored background which I specify using R G B settings. Unfortunately, this background does not look the same when others open the files on their computers. Is there anything I can do at my end to correct this?

Color almost never looks the same on some other screen - you can't force everyone to calibrate theirs and use proper color management settings... Greetlings from Lake Constance! Hraban --- http://www.fiee.net/texnique/ http://contextgarden.net http://www.cacert.org (I'm an assurer)