Hi, Anton, the creator of Color.review here.

I can agree that WCAG guidelines are a bit harsh sometimes but it makes sure that everyone have a good chance to view the content. Eyes, colors & computers interact in complex ways.

Also, in many countries, by law, you have to follow WCAG, specially for the public sector.

If you are interested how and what values W3 have chosen you can read more here: https://www.w3.org/WAI/WCAG21/Understanding/contrast-enhance...

Don't fully understand what you mean by providing "color around the WCAG".