How do you convert RGB to OKLCH?

[NullVoxPopuli]

Testing some symmetric conversion to make sure things are what I expect

I'm just testing things out on the docs site here: https://culorijs.org/api/#formatHex
in the browser console.

culori.formatHex(culori.parseHex('#0074ff'))
// "#0074ff" 

culori.formatHex(culori.convertRgbToLab(culori.parseHex('#0074ff')))
// "#0074ff"  

culori.formatHex(
  culori.convertLabToLch(
    culori.convertRgbToLab(
      culori.parseHex('#0074ff')
    ), 
    'oklch'
  )
)
// "#ff00ff" -- wrong

in that last one, if I omit the oklch argument, which converts to regular lch, formatHex returns the original hex, as expected

[NullVoxPopuli]

ah-ha!

culori.formatHex(
  culori.convertLabToLch(
    culori.convertRgbToOklab(
      culori.parseHex('#0074ff')
    ), 
    'oklch'
  )
) 

This does it

[danburzo]

Yes, that’s what I was meaning to point out. In your original example, CIELAB (lab) and Oklab (oklab) were being mixed.