So, having just read this about Oklch, it strikes me that I [as a designer] would want to alter the chroma according to the ability of the display -- which they show the possibility of at the end, using @media:

    @media (color-gamut: p3){
      .some-class {
        color: oklch(70.9% 0.195 47.025);}}

Surely this is the only real option, otherwise you're risking distributing colours across a gamut that the display simply won't render? I'd assume that's going to result in non-linear fades, poor colour distinction, and such like?