Outline colour scheme potentially clashes with background

[Daniel Pope]

There are combinations of outline colour scheme and document background
colour which do not work well.

The point at which the scheme flips from light to dark is not optimal - a
light yellow-green background that is 51% opaque can still have the light
colour scheme, providing very little contrast.

Firstly, I think the calculation for colour scheme is slightly off - it
should be:

(r*0.3f+g*0.6f+b*0.1f)*a+1.0f-a > 0.5 (for r,g,b,a in [0,1])

- but I would question whether document background colours should be
displayed at all in outline mode. It would make more sense for them to be a
part of the colour scheme. I believe this is how other applications do it,
but I don't have a copy of anything to hand to test this.

[Bryce Harrington (bryce)]

Can you provide some screenshots that demonstrate the issue?

[Daniel Pope (djpope)]

Sure, see the attached.

[prkos (prkos)]

yes it does seem some combinations lack contrast

[grey tomorrow (gtomorrow)]

Closing because INVALID:MySpace syndrome -- Non-issue.

If you feel this issue has been unjustly closed, please feel free to open a new issue at https://inkscape.org/report . Thank you.

Closed by: https://gitlab.com/greytomorrow