Created attachment 157659 [details] shot.png SYSTEM - KDE Plasma 5.26.5 - KDE Frameworks 5.103.0 - Qt 5.15.8 - Graphics platform X11 - Linux 6.2.8 Zen HOW TO REPRODUCE 1. Install "colord-kde" and "displaycal". 2. Using "displaycal" calibrate the screen. 3. Open an image with blues or purples on an image viewer, then on Firefox. RESULT Colors look weird on Firefox only.
This is going to be a Firefox issue.