This is the 10024th most frequent Catalan word.
obscura
Dark.
Here, 'obscura' describes a physical characteristic, the dark shade of the painting's color.
La pintura té una tonalitat obscura, gairebé negra.
The painting has a dark tone, almost black.
In this sentence, 'obscura' is used to depict the lighting condition of the room being deficient.
L'habitació obscura feia difícil veure els mobles.
The dark room made it difficult to see the furniture.
Here, 'obscura' metaphorically refers to an enigmatic or mysterious aspect of a person's character.