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For recent some recent publications I designed some figures which rely heavily on different colors to distinguish different features of those figures, or to add more relevant data to the figure. To increase the readability and visibility I try to choose colors which are as far away as possible from each other (i.e. orange/blue, for example).

This approach works fine for colored publications, but I got feedback from readers that it is difficult to distinguish those features when printing the publication in grayscale. To reduce such issues it was suggested to use different line styles (i.e. dashed/dotted/mixed/etc.). This can work for some figures, but for others (where having a continuous line is important) it does not.

Thus, another question came up: How important is it today to limit the figures to be grayscale-friendly? Based on my knowledge, at least, most of the publications are read in a digital form anyway, where colors are used. If not, at least I for myself print all publications in color, to avoid similar issues when reading the paper version.

Therefore, how important is it to keep the figures grayscale-friendly? A similar question was asked here: Why is colour use in academic writing disapproved?, but (as far as I can see) it is more focused on the content of the document itself, not on the figures.

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  • This is a good question. I'm old school, so I continue to tell my students not to use colors in their figures/plots. Probably until all the 'old school' academics like me retire then color will be ok!
    – VitaminE
    Sep 16 at 9:06
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    Are you planning to pay extra for have color figures in the print version of the paper? (Many journals have a publishing surcharge for color figure in the print version.)
    – mmeent
    Sep 16 at 9:34
  • Indeed as above. To avoid "fees" usually one has to argue with the editor that colors are essential and the authors have not money....
    – Alchimista
    Sep 16 at 10:09

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