Different color display in Sozi on Ubuntu

[albertheres]

Colors in Inkscape are different displayed in Sozi.

I notice that a colors from my inkscape file are different displayed in Sozi. You can see it on this screen capture.

• I have tested it on Ubuntu 64bit 20.04 with Sozi 20.05 and 20.11 as well. But no difference.
• When I use Windows 10 64bit the colors are equal in Inkscape an Sozi. So it seems a Linux issue.

Assumed this is related to color profiles. But I don't know how to solve it.

[aumouvantsillage]

Have you tried to open the SVG alone in a web browser?

Sozi is not supposed to alter the visual rendering of your documents.
At first sight, I would consider that this is an issue in Inkscape or in the rendering engine that Sozi uses.

[albertheres]

Yes, I tried. The SVG is displayed equal in Inkscape and Firefox, but different in Sozi as you can see here.

Also the slider bar is not blue displayed, but purple as you can see here. This seems related

[albertheres]

Just some additional info that I discovered:

• SVG colors in Inkscape are right displayed
• SVG colors in Firefox are right displayed
• SVG colors in Sozi are wrong displayed (blue becomes purple)
• Sozi.html colors in Firefox are right displayed
• Sozi export to MP4 colors are wrong displayed (actually: wrong rendered)

This is a single screen capture with all samples included.

Hopefully there is a quick fix to solve this issue.

[aumouvantsillage]

Thanks for the additional info. This is very helpful.
I think that your problem is related to this issue in Electron

I will check whether the option --disable-color-correct-rendering works in the current version of Sozi.
If not, the only way to fix it consists in rebuilding Sozi against a fixed version of Electron.

[albertheres]

My pleasure! Indeed that Electron issue seems related. Thanks for checking that option.

I have checked more colors (default inkscape swatches) and I notice that especially blue is affected as you can see here.

[aumouvantsillage]

I have added the "disable-color-correct-rendering" option.
However, since I cannot reproduce your problem, I am not sure that it is fixed.

You can try it by running this version for Linux x64

[albertheres]

Thanks for you effort! unfortunately this does not solve the problem as you can see here

[albertheres]

I solved the problem as you can see here!

The monitor color profile was the trick. I changed it from HP default to sRGB and the colors are displayed equally now in Inkscape and Sozi. Check this comment with more info.

[aumouvantsillage]

Great.
I would not consider it "solved" because I would expect Sozi to comply with any custom color profile.

[albertheres]

Yes I agree with you. I have a workaround that solved the issue for me. But a global solution is better.

It is a conscious choice as you can read is the document.

Chrome will assume that the operating system settings for color management were set intentionally, and will respect those settings.