This is the 5113th most frequent Polish word.
przeciwnych
"Przeciwnych" means "opposite" or "opposing" in English.
In this sentence, 'przeciwnych' is used as an adjective describing the polarity of colors, referring to them as being opposing or contrasting.
Lubię malować obrazy przedstawiające kolory przeciwnych biegunów.
I like painting pictures depicting colors of opposite poles.
Here, 'przeciwnych' describes the views or opinions of people as being conflicting or contrary.
Musimy szukać kompromisu między ludźmi o przeciwnych poglądach.
We must seek compromise among people with opposing views.
In this usage, 'przeciwnych' characterizes the options as being in opposition or contrast to each other.