MAC Ground Brown is a moderately warm-toned, dark taupe with a matte finish. It is a permanent eyeshadow that retails for $17.00 and contains 0.05 oz.
Ground Brown is described as a "dirty deep brown [with a Matte finish]." It's a medium-dark, subtly red-toned brown with a matte finish. The texture was really smooth, but it has a tendency to skip slightly. It applies and is easiest to blend if you use a fairly fluffy blush to apply it. This shade lasted for eight hours on me. Kat Von D Shadow Box (P) is more muted. Tarte Dream in Chocolate (LE) is darker. Too Faced Triple Fudge (P, $16.00) is similar. Laura Mercier Espresso (LE, $23.00) is darker. Chanel Charming #4 (LE) is similar. bareMinerals Boardroom (LE) is darker. MAC Embark (P, $15.00) is darker. Make Up For Ever #162 (P, $20.00) is similar. Inglot #326 (P, $6.00) is similar. See comparison swatches / view dupes.
FURTHER READING: Formula Overview, which is a detailed review of the range as a whole.
M·A·C Eyeshadow is a highly pigmented powder formula that applies evenly and blends well. Suitable for use either wet or dry, it's available in a wide variety of textures and finishes.