Paper bags are often brown due to the natural colour of the paper material used in their production. Brown paper bags are typically made from unbleached or minimally processed paper, which retains its natural colour.

This eco-friendly choice reduces the need for excessive chemical treatments during the papermaking process. The brown colour reflects a more environmentally conscious approach, aligning with the trend towards sustainable and responsible packaging.

Additionally, the natural and neutral appearance of brown paper bags allows for easy customization and branding, making them a versatile option for various businesses and purposes.