"A brown hat."
Translation:Un sombrero marrón.
Why now duolingo is teaching marron, when previously u used other word for brown?
Pardo is a lighter shade of brown (between brown and yellow). It's the same word in Portuguese (I'm native speaker ^^), I've recognized that a lot of words look the same. BTW, the most seen word is "marrom". I hope my comment helped! ^^
There are several words for brown in Spanish: marrón, café (mainly Central America, Ecuador, and Mexico), castaño, pardo, moreno (used for hair and skin), and bronceado (used for skin). I've heard that different words can indicate different shades, but I can't speak that particular aspect.
FULL DISCLOSURE: Native English speaker - US, Southern Appalachian dialect. Other uses of English may vary. Advice about Spanish should be taken with a grain of salt.