I want to use RGB colors in PDF in order to produce PDF/UA with enough contrast to meat Accessible standards for text in orange.
I have tried several options like the one in this question
An other one I have tried is the option to use

<fo:declarations>
  <fo:color-profile src="url('AdobeRGB1998.icc')" color-profile-name="adobeRGB_98"/>
</fo:declarations>

And then reference it with color=”rgb-icc(255,127,0,adobeRGB_98)”

The actual color I need looks like this:

And the color I now have in PDF is

I asume the last one is coveted to cymk and has not enough contrast according WCAG 2.0

We are using FOP version 2.10