czerwony

In a sentence

• Mam czerwony parasol.

  I have a red umbrella.

  Here, 'czerwony' describes the color of the umbrella, functioning as an adjective modifying a noun.

• Wieczorem niebo było czerwone.

  The sky was red in the evening.

  In this sentence, 'czerwone' is the neuter singular form of 'czerwony' as it describes the noun 'niebo' (sky), also functioning as an adjective.

• Czerwony jest moim ulubionym kolorem.

  Red is my favorite color.

  Here, 'czerwony' is used as a noun to represent the concept of the color red.