black
The German word for black is 'schwarz'. It is used in the same way as the English word 'black' to describe something that is the darkest color, or something that is devoid of light or color. It can also be used metaphorically to describe something negative or evil, such as a 'black heart'.
The sky is not blue anymore, but black.
This example implements the use of 'schwarz' as an adjective color. In this context, it's being used to describe the changing color of the sky, which is commonly seen in day-to-night transitions.
I am buying a black dress.
Here 'schwarz' is used to describe the color of the dress. The form 'schwarzes' agrees with the gender (neuter) and case (accusative) of 'Kleid'.
My cat is black.
This phrase showcases how 'schwarz' can be used in a subjective statement to describe the color of objects (or animals) that belong to you.