Making an ICC Color profile?

I have this TV which has terribly off colors.

They are very dark, oversaturated and the contrast is too high.

KDE Plasma supports applying custom color profiles, but what I could find is more than a bit intransparent.

• We have this ancient website describing the specs
• there is this C++ library, lets say I am not up to using that barebones
• Here is a list of software, looks like a lot of proprietary software
• this useless "free software" only for Windows, likely "as in free beer" and outdated
• This dude's profiles, created with DisplayCAL software

Anyone made some on Linux?

Edit: nice that DisplayCal is free software and available on Linux!