The Values of the European Union

The Union is founded on the values of respect for human dignity, freedom, democracy, equality, the rule of law and respect for human rights, including the rights of persons belonging to minorities.
These values are common to the Member States in a society in which pluralism, non-discrimination, tolerance, justice, solidarity and equality between women and men prevail.

The term "European Values" is occasionally misused, especially by extreme right-wing political groups or parties.
epiStoa always refers to the  European Values as given above (Art. 2 of the EU Treaty).
For a complete reference, see

https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:12016ME/TXT&from=EN#d1e92-13-1

or get a pdf of Art. 2 here.