Re: What Is The Point Of Dark Mode?

Richmond:

But this web page presents a different view.
>
  https://www.visualexpert.com/Resources/cfaqPart6.html
>
In the examples of the word "hello" blue on black looks
quite clear to me, but then so does black on white. But
blue on red and red on blue are disasters.

While working on a NetPBM tool for the adjustment of
saturation[1], I learned a bit about colors, partly from
direct experience.  In the RGB triplet, blue is the darkest
color and green the lightest.  Perceived saturation is an
inverse[2] relation to perceived brightness.  The six main
colors in the order of increasing brightness and (generally)
decreasing saturation are: BRMGCY, with blue the darkest and
yellow the lightest color.

Blue on black is bad because of poor contrast, as well as
pure red on pure blue, and yellow on white.  Also see how
ugly green on white on that page is -- the exact combination
in the default colorscheme of Microsoft SQL Management
Studio!

Attempting to increase the brightness of blue by adding red
and green quickly "dillutes" its saturation.  For this
reason, good dark schemes tend to use bluish colors for the
background or comments (for there may be more than one), and
green-yellow collors for the foreground.  Converselty, white
schemes have to use dark colors for the foreground, which
significantly decreases the variety of hues, and that is a
serious disadvatage.
____________________

1. Example:
   <https://freeshell.de/antonius/img_host/pamaltsat-ex01-v.png>

2. The indefinite article is intentional, because it is a
   general tendency rather than an exact analytical
   relation.

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