What is the darkest shade of chestnut known as?

The darkest shade of chestnut is referred to as liver. This color is characterized by a rich, deep brownish hue that can sometimes appear nearly black in certain lighting conditions. Liver chestnuts typically have a coat that is consistently dark over their entire body, including their mane and tail, which may also be of a similar dark color.

In contrast, other shades of chestnut, like sorrel, are generally lighter and can have more reddish undertones. Amber, while a valid horse color term, is not associated specifically with chestnut shades; it describes a different type of color often related to palominos or buckskins. Mahogany is also a deep reddish-brown color that can describe some chestnuts but does not specifically identify the darkest shade, which is classified as liver. Hence, liver is the most accurate term for this particular shade of chestnut.