Brown pigments were one of the first to be used by mankind since it was very easy to produce them. It was not considered as exactly a color since they thought that it was the natural tint of things like wood, flax or leather that you then needed to dye. Brown was also the color of grief during antiquity. During the Middle Ages, monks chose to wear brown clothes to show their modesty and renunciation will. More recently, this color has been associated with far-right political parties in some countries.
Brown is unfortunately not used on national flags, apart from on coats of arms on some flags. It is the case of Ecuador where a brown condor is on the country’s emblem. Otherwise, after some research, we found some state or prefecture flags where brown is used. Japan’s Kumamoto and Yamaguchi prefectures have white and brown flags. Many American states also have brown on their official flags. We can give as examples the flags of Connecticut, Delaware, Florida, Idaho, Oklahoma, and Utah; however, the best known is the California flag with a bear on it.