EQUINE COLOR ATLAS & GENETICS
The Complete Guide to Horse Coat Colors & Markings
Discover the genetic science, visual identifiers, and rare dilution patterns behind every equine coat shade—from foundational base coats to exotic patterns.
Explore The AtlasEquestrian Registry & Coat Genetics
Filter by Breed Standards
Foundational Base Colors
All equine coat colors stem from three baseline genetic expressions. Discover the foundational pigments that define the modern heritage horse.
- Visual Phenotype: Bay
Bay Base Color
A rich reddish-brown body with black points on the mane, tail, and lower legs. This vibrant pigment is highly prized in luxury breeding.
GENETIC FORMULA
E_ A_
Dominant black base (E) restricted to extremities by the dominant Agouti gene (A).
- Visual Phenotype: Black
Black Base Color
A striking, completely uniform solid black coat from head to hoof, free of brown hair. A timeless and commanding genetic base color.
GENETIC FORMULA
E_ aa
Dominant extension with recessive agouti, allowing black pigment to fully distribute across the body.
- Visual Phenotype: Chestnut
Chestnut Base Color
A rich red-toned coat ranging from bright copper to deep bronze. The complete absence of black pigment highlights stunning physical depth.
GENETIC FORMULA
ee
Homozygous recessive red extension prevents the production of black eumelanin, expressing only phaeomelanin.
The Pattern Modifiers
An exploration into the spectacular genetic anomalies that alter, dilute, and distribute pigment across the equine canvas, creating unique coats of legendary beauty.
GENE G • PROGRESSIVE SILVERING
The Gray Modifier
An intriguing genetic sequence that slowly deprives hair follicles of pigment over time. Born in rich dark hues, these horses undergo a mesmerizing, years-long metamorphosis—developing dappled silvers before culminating in a majestic, snow-white coat.
Explore Gray Genetics
TOBIANO • OVERO • SABINO
Pinto Patterns
A breathtaking genetic interplay of white patterns layered over solid base coats. From the clean, vertical shields of Tobiano to the intricate, frame-like margins of Overo, and the delicate, starry speckles of Sabino, these patterns redefine equine elegance.
Discover Pinto Formations GENE LP • APPALOOSA SPECKS
Leopard Complex
An ancient, highly-prized genetic mutation responsible for Leopard spots and snow-dusted blankets. LP orchestrates spotted skin, striped hooves, and unique white patterns, resulting in complex coats that are as rare as they are visually arrestive.
Decode Leopard AllelesEQUESTRIAN TAXONOMY
Identification & Markings
An elegant visual taxonomy of equine white identifiers, detailing the precise characteristics of facial patterns and distal limb distributions.
Facial Markings
Distinguishing white patterns that appear on the horse's head, ranging from simple forehead spots to full coverage of the facial bones.
- Star — A solid white mark of any shape located on the forehead, typically above the eyes.
- Strip — A vertical, narrow white stripe extending down the center of the nasal bone.
- Snip — A small, isolated white patch situated specifically between the horse's nostrils.
- Blaze — A broad, symmetrical white stripe running down the face, covering most of the bridge.
- Bald Face — A highly prominent white marking extending past the eyes, forehead, and cheekbones.
Leg Markings
Distal limb patterns categorized strictly by the vertical level of white pigment extending from the hoof up toward the knee or hock.
- Coronet — A fine, narrow white band located directly above the margin of the hoof wall.
- Pastern — White pigmentation extending from the coronet band up to the pastern joint.
- Fetlock — A white sock pattern extending further up to cover the entirety of the fetlock joint.
- Sock — A moderate white pattern extending roughly halfway up the horse's cannon bone.
- Stocking — An extensive white marking rising high up the leg, reaching the knee or the hock.
Dilutions & Exotic Shades
An exploration of the rare modifiers, dilution genes, and shimmering loci that elevate basic equine coat colors into ethereal, highly prized living masterpieces.
Palomino
A single copy of the Cream allele acting on a base chestnut coat. Yields a rich golden body beautifully complemented by a snow-white flaxen mane and tail.
Buckskin
One cream allele modifying a standard bay base. This results in a warm, cream-tan to deep bronze coat paired with striking jet-black points on the lower limbs and tail.
Dun
An ancient, primitive gene that dilutes base colors while maintaining dark features. Recognizable by a bold, dark dorsal stripe down the spine and zebra-barring on the lower legs.
Roan
An intricate pattern of white hairs interspersed evenly throughout the horse's body. Strikingly, the head, mane, and lower extremities retain their solid pigment.
Cremello
An elegant double-dilution of the chestnut base coat. Characterized by a highly refined milk-cream coat color, delicate pink skin, and mesmerizing blue eyes.
Champagne & Silver
Ultra-rare modifiers. Champagne lends a brilliant metallic sheen and hazel eyes, while Silver Dapple dilutes black pigment to beautiful chocolates with flaxen silver manes.