Brown is the ultimate blending neutral, covering the gamut of shades from 1 to 10 with more interest and variety than gray. It can complement almost any color on the color wheel, when selected carefully. Brown rugs are easy to live with.
Unfortunately for my ability to product brown rugs, brown is not a very common color in clothing, found more often in trousers than in recycled t shirts. When found, it is often faded and worn. It takes a while to rebuild stash when a brown rug leaves the studio.
Here are some brown rugs that have found homes:
Any of these can be used as starting points for a rug made to your specifications. However, because the rugs are made from recycled tshirts (among other fabrics), they can never be exactly duplicated.