Our web publishing is complicance checked against WCAG 2.1 by an externa company, and was approved.
The company that did the complicance check is ETU
The compliance check is only done on our new publishing profile, not the old one. The old publishing profile is not compliant.
Are you unsure whether you are using the new or old publishing profile, or do you need assistance in getting stared using the new one? Contact firstname.lastname@example.org an we will assist you!
You can read more about WCAG 2.1 here
Since you have the possiblility to choose you prefered color scheme, you need to make sure that the colors you choose are complicant with WCAG 2.1.