Created attachment 144414 [details] video resulting from the described steps SUMMARY Appimage version, Ubuntu 18.04. When adding a clip with the color #414550 to KDenlive, #41454f is used instead. Other colors are affected too, like #40454f changing to #3f454f, and presumably others. STEPS TO REPRODUCE 1. open a new project, any colorspace. 2. add a color clip with the color #414550 3. add the clip to the timeline 4. Render to mp4, default settings 5. measure the color of the resulting video OBSERVED RESULT The resulting video has a color of #41454f EXPECTED RESULT The resulting video should have a color of #414550 SOFTWARE/OS VERSIONS Ubuntu 18.04 / Gnome 3.28.2 KDE Plasma Version: KDE Frameworks Version: 5.81.0 Qt Version: 5.14.2 ADDITIONAL INFORMATION This is presumably not happening at the level of the render, since both the clip and project monito window also show a value of #41454f, although the clip preview in the clip bin does show #414550 as it should. This also happens when adding a PNG as a clip, although color source is the most straightforward way to reproduce.