Black (E) is one of the base colors. Ponies are black, chestnut, bay, or brown with other colors diluting/modifying the base color. Extension and agouti form the basis of all equine color. Extension determines whether or not a pony has black or not and agouti determines where it will go. Black horses have the dominant form of extension and the recessive form of agouti.

Many blacks do not look true black due to sunbleaching or fading, which are known as fading blacks. The best way to determine if a horse is black or not is to look at the muzzle. If the horse is sunbleached but the muzzle is still black it is most likely a black. If the muzzle is brown than the horse is a bay or brown. Blacks often have red streaks in their manes and tails from the sun. The winter coats of blacks often fade in the sun.

Blacks can be born as either an obviously black color or as a greyish black color. Foal coats often fade badly and black foals often look brown instead of black until they shed the foal coat.

Black is likely an original color in Chincoteagues as it is widespread and the breed was originally all solid dark colors. A 1891 article in the New York City newspaper The Sun stated that the ponies "are most frequently black, gray, sorrel, or dun [buckskin]." Leonard D. Sale wrote in 1896 in The Horse Review of Chicago that, "The prevailing colors are bay, brown, chestnut and light sorrel. A Washington Post article from 1902 stated that the prevailing colors were bay and black. A 1912 Baltimore Sun article stated that the ponies were "black for the most part". A 1923 St. Petersburg Times article described the ponies as "bay, gray, dun [buckskin], black, and sorrel". A Delmarva Star article describing the 1930 Pony Penning described the ponies as "many colored", with blacks, browns, bright bays, and so many with spotted coats."

Solid black.B. G. Black Gold, Picture courtesy of the National Chincoteague Pony Association.

Solid black. Chincoteague Sable, 2008, Picture courtesy of Matt DesJardins.

Black tobiano as an adult and as a foal. Misty's Black Mist, 2003 and 1989, Adult picture by Amanda Geci, Foal photo courtesy of Kendy Allen.

Black minimal tobiano as a foal and as a 7 year old. Ace's Black Tie Affair, 2007 and 2014, Foal picture courtesy of Matt DesJardins, Adult picture by Amanda Geci

Black tobiano. Tested homozygous for black. Chesapeake Powhattan's Promise, 2014, Picture by Amanda Geci.

Solid black. Talia, Picture by Amanda Geci.

Sunfaded black tobiano as an adult and as a foal. Misty's Storm Chaser, 2010 and 2003, Adult picture by Amanda Geci and foal photo courtesy of Kendy Allen.

Black splashed white with sunfaded coats. CLG Surfer's Blue Moon, 2016 and 2018, Pictures by Amanda Geci.

Black tobiano in summer and winter coats. Baybe, 2014 and 2016, Picture by Amanda Geci.

Solid black colt in sunfaded foal coat. Wild foal, 2007, Picture by Amanda Geci.

Black tobiano splashed white as a foal and as an adult. Misty's Morning Glory, 2001 and 2003, Pictures by Amanda Geci.

Black tobiano. Historical reference. Wild stallion, 1967, Screen shot from a Wild Kingdom episode.

Faded black. Stars Black Velvet, 2021, Photo by Amanda Geci.

Possible black. Early 1900s, Photo from The Waterman and Wild Ponies by Robert Mears.