Winter White Dwarf Hamster Colors and Genetics

Agouti Colors

Agouti colors have a dorsal stripe and banded hair shafts, and are not Pearl or Golden.

Normal
++
The wild color. Brownish-gray back with dark ticking, a dark dorsal stripe, and an off-white belly. The eyes are black and the ears are dark gray.
Campbell's equivalent: Normal (++)

Sapphire
ss
Soft blue-gray back with a darker gray dorsal stripe and off-white belly. The eyes are black and the ears are gray.
Campbell's equivalent: similar to Opal (dd)

Violet
ss bb
Pale, dull beige with a lilac cast and a blue-gray undercoat. The eyes are black and the ears are gray.
Campbell's equivalent: Lilac Fawn (bb dd)

Argente Black Eye
bb
Warm cream to ginger with brown tipping and a dark brown undercoat. The eyes are black and the ears are pink.
Campbell's equivalent: Black Eyed Argente (bb)

Blue Argente
ss pp
Soft ginger-orange with a blue tint and blue-gray undercoat. The eyes are red and the ears are pink.
Campbell's equivalent: Blue Fawn (dd pp)

Cream Argente
bb pp
Pale, dull cream-beige with a brownish stripe. The eyes are red and the ears are pinkish.
Campbell's equivalent: Beige (bb pp)

Violet Red Eye
ss bb pp
Soft beige-gray with a blue tint and gray undercoat. The eyes are red and the ears are pinkish-gray.
Campbell's equivalent: Blue Beige (bb dd pp)

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Golden Colors

Also sold as Mandarin or Pudding. Golden fades with age, so adults are often paler than they were as pups.

Golden
Go-
Bright golden-orange with a slightly darker stripe and a pale belly. The eyes are black and the ears are gray.
Campbell's equivalent: none

Golden Sapphire
Go- ss
Golden washed out with gray, giving a muted beige-gray coat with a grayish stripe. The eyes are black.
Campbell's equivalent: none

Golden White Eared
Go- bb
Pale golden-cream. The eyes are black and the ears are pink.
Campbell's equivalent: none

Golden Red Eye
Go- pp
Pale golden apricot that fades toward cream with age. The eyes are red and the ears are pink.
Campbell's equivalent: none

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Pearl Patterns

Pearl is dominant and cloaks the base color. Only breeding tells you what's underneath.

Pearl
Pe-
White coat with gray ticking or a darker stripe showing through. The eyes are black and the ears are gray to pink.
Campbell's equivalent: none

Pearl White Eared
Pe- bb
Nearly pure white with very little ticking. The eyes are black and the ears are pink.
Campbell's equivalent: none

Pearl Yellow Line
Pe- Go-
White with a yellow to orange stripe or patches where the golden underneath shows through. Many Golden Pearls show no yellow at all and look like plain Pearls.
Campbell's equivalent: none

Pearl Red Eye
Pe- pp
White with red eyes and pink ears. Can look almost identical to a Campbell's Red Eyed White or Albino.
Campbell's equivalent: none, but resembles REW (didi pp Si-)

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Breeding Notes

• Red eyes always mean Campbell's genes. Pure Winter Whites only come in black eyes.
• Homozygous Pearl (PePe): sources disagree on whether it's fully viable. Consistently small litters from Pearl × Pearl pairings may be a sign.
• Golden × Golden: breeders report poor fertility, so pairing a Golden to a non-Golden is the safer choice.
• Crossing in Campbell's: use a Campbell's female with a Winter White or mostly-Winter White male for first crosses. Hybrids are discouraged by most breeders!

Pearl Yellow Line "Flame Djungarian" 

Is Your Winter White Really a Winter White?

If you've bought a "Winter White" dwarf hamster from a pet store lately, there's a good chance you actually brought home a hybrid. I've been breeding Phodopus for over 30 years, and in that time I've watched pure Winter Whites (Phodopus sungorus) and pure Campbell's (Phodopus campbelli) get harder and harder to find. The two species cross easily, so the pet trade has mixed them for decades, and today most dwarfs on store shelves carry a little of both. That isn't a crisis, but it does matter if you care about health, temperament, or just knowing what's actually in your cage.

So which colors are pure? Surprisingly few. Winter Whites have only three well-established color genes: Agouti, Sapphire, and Pearl. That gives you Normal (the wild agouti color), Sapphire (a soft blue-gray), Pearl (white with a darker stripe or ticking), and Sapphire Pearl (Pearl sitting on top of a Sapphire base). If your hamster looks like one of those, it could be pure, though only a known pedigree can really tell you.

Then there are the ones people argue about. Marbled shows up on some lists of pure colors, while plenty of breeders suspect it came from hybrids. Mandarin (also sold as "pudding" or "golden") is the big one. It may have started as a genuine Winter White mutation, but somewhere along the way it got crossed into Campbell's Argentes, and the golden hamsters you see today are almost all hybrids.

Everything else points to Campbell's somewhere in the family tree. Argente, blue, yellow blue fawn, camel, brown, cream, merle, and umbrous are all colors strongly associated with hybrid crosses. The "Sunfire" hamsters showing up in stores now (what we used to call "Flame Djungarians" 15 years ago) fall squarely into this group.

Want a quick way to spot a hybrid? Look at the eyes. Pure Winter Whites have black eyes, period. A red-eyed "Winter White" is carrying the Campbell's Argente gene, no matter what the cage card says. (I say this with love, since my own current pair is a red-eyed hybrid line!)

Campbell's Dwarf Hamster Colors and Genetics

Agouti Colors

Agouti colors have off-white to cream bellies, three side arches, a darker dorsal stripe, and banded hair shafts.

Normal (wild type)
++
Dominant. Brown back with black tipping and a yellow line along the arches. Gray undercoat and a black dorsal stripe. The eyes are black and the ears are gray. 

"wild type" Campbell's Dwarf Hamster

Black Eyed Argente (BEA)
bb
Recessive. Cream with dull ginger-brown tipping, an ivory belly, and a dark brown-grey undercoat. The eyes are black and the ears are pink.

Opal
dd
Recessive. Smoky gray with blue tipping, a soft gray undercoat, and a darker gray dorsal stripe. The eyes are black and the ears are dark gray.

Dark Gray
dgdg
 Recessive. Keeps black pigment in the fur while removing yellow tones. Features a deep, chinchilla-like dark gray coat without warm brownish or yellow hues. Allegedly originally a line from a Southern California commercial breeder that supplied pet stores. May be very prone to diabetes and spinal issues.

Argente
pp
Recessive. Bright orange with no tipping, an ivory belly, and a brown dorsal stripe. The eyes are red and the ears are pink.

Lilac Fawn
bb dd
Light, dull ginger with a blue-gray undercoat and stripe. The eyes are black and the ears are gray. It requires two copies each of the black-eyed argente (bb) and opal (dd) recessive genes.

Beige
bb pp
Dull ginger-beige with a brown dorsal stripe. The eyes are red and the ears are gray. Requires two copies each of both Black-eyed argente (bb) and (pp) red eyed argente recessive genes. 

Blue Fawn

dd pp
Soft ginger with a blue tint and a blue-gray undercoat. The eyes are red and the ears are pink. It requires two copies each of both the opal (dd) gene and the argente (pp) gene. Features a warm, soft fawn or ginger-blue tone with banded hairs showing multiple colors along each shaft and off-white or cream belly

Blue Beige
bb dd pp
Beige with a blue tint and a gray undercoat. The eyes are red and the ears are gray. Combines Black Eyed Argente, Opal, and Argente. When these specific recessive traits combine, they dilute and modify each other to create the unique Blue Beige phenotype. Requires two sets each of 3 recessive genes (bbddpp)

Self Colors

Self colors are one color from base to tip, with common white faults on the moustache, chin, paws, and sometimes a white zipper. Belly is the same color as the back, not cream white, and no side scalloping. 

a "Silvering" Blue Campbell's hamster

Black
aa
Solid black, and some have white wings or collars. The eyes are black and the ears are dark gray. Most Blacks "silver" with age, possibly from a separate gene linked to Black.

Black top, Blue bottom

Blue
aa dd
Steel blue-gray. The eyes are black and the ears are gray. Requires two copies each of recessive Opal and Black genes.

Chocolate
aa bb
A rich, dark solid brown self-color (meaning the entire coat is one uniform color without agouti ticking or banding). The eyes are black and the ears are gray. Created by combining the recessive black (aa) and black-eyed argente (bb) genes. All chocolates will silver with age. 

Dove
aa pp
Dark dove gray-brown. The eyes are red and the ears are pink. Chocolate brown/taupe with red eyes. A combination of black and argente genes. 

top right: blue, top left: dove, bottom right: black, bottom left: red eyed lilac

Black Eyed Lilac (BEL)
aa bb dd
Soft lilac-gray. The eyes are black and the ears are gray. Combination of three recessive genes: opal, black eyed argente, and black genes.

Dark Beige
aa bb pp
Dark beige all the way to the roots. The eyes are red and the ears are pink. Combination of three recessive genes - 
aa (Black): A self-coloring gene that removes the traditional agouti markings (like the lighter side arches), making the coat a uniform solid color.
bb (Black Eyed Argente / "BEA"): Modifies dark pigment to a dull brownish-ginger or rust tone.
pp (Argente): A pink-eyed dilute gene that bleaches out dark pigments, shifting them toward yellow/orange and turning the eyes red/pink.

Red Eyed Lilac (REL)
aa dd pp
Soft lilac-gray. The eyes are red and the ears are pink. An easy way to remember the difference from Dove: Dove is Darker, Lilac is Lighter. triple-recessive mutation - 
aa (Black): Eliminates the wild agouti pattern (ticking, side scallops, and light belly), resulting in a solid, self-colored base coat.
dd (Opal): A dilution gene that softens dark pigments into a blue-gray tone.
pp (Argente / Pink-Eyed): Dilutes black pigment into red/pink and strips black pigment from the eyes, giving them a bright red or ruby coloration.

Champagne

aa bb dd pp

Features a soft, warm beige or light golden-brown coat. The eyes are red and the ears are pink. Champagne is the rarest color and the only four-gene recessive color. Because every contributing gene mutation is recessive, a hamster must inherit two copies of each mutated gene (one from each parent) to express the Champagne phenotype. 
aa (Black): Eliminates the wild agouti banding pattern, creating a solid ("self") base color.
bb (Black-Eyed Argente / Rust): Alters the eumelanin pigment from black to chocolate brown.
dd (Opal / Dilute): Acts as a color diluter, turning dark pigments into soft blue/grey shades.
pp (Argente / Cinnamon): Removes dark pigments, introducing striking red or pink eyes and shifting the fur to orange or ginger tones.

Black Eyed White (BEW)
didi P- Si-
Platinum combined with the dilute gene, which washes out all fur color. The dilute gene also makes homozygous Platinum (SiSi) survivable.
didi (Dilute): A homozygous recessive gene combination. The dilute gene washes out or lightens the base coat colors of the hamster.
P- (Argente / Pink-Eyed Dilute): The capital "P" indicates a dominant trait, meaning the hamster has at least one dominant gene at this locus. This ensures the hamster retains black eyes rather than pink or red eyes (which a recessive pp combination would cause).
Si- (Platinum): A dominant coat pattern. The Platinum gene is a pattern modifier that gradually fades the hamster's coat over time, often turning a lighter or silver color, and can contribute to a completely white appearance when combined with other lightening genes.

Red Eyed White (REW)

didi pp Si-
The same as a BEW but with Argente (pp), giving red eyes. It can't be told apart from an Albino without test breeding or knowing the parents' genes.

Modifiers that affect any color

• Albino (cc): all white, red eyes, pink ears, masks all other genes
• Umbrous (uu): gray wash over any color, turns an off-white belly "sooty" gray. Can hide mottling, which is why unknown genotypes are risky
  
  
  
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White patterns

• Platinum (Sisi): dominant; SiSi is lethal unless paired with didi (BEW/REW)
• Micro BEW / microphthalmus (SiSi Didi?): suspected SiSi surviving with only one dilute copy; small eye(s), usually a smaller animal
• Red Eyed Mottled (Mimi): reddish eye tinge under light in black-eyed animals, invisible in red-eyed colors. MiMi = anophthalmic whites: eyeless, toothless, dead by about 14 days. Never breed two red eyed mottleds, and if you can't confirm black eyed mottled, don't pair two mottleds at all
• Black Eyed Mottled (Mo-): looks the same but no eye tinge and not homozygous lethal; uncommon, so assume red eyed mottled

Other patterns: Brindle appeared in California but couldn't be reproduced. Mosaic is a single patch missing one of the body's genes (example given: a mottled Dark Beige with a patch between ear and eye that could be loss of Black, BEA, or Argente).

Coat types (compatible with any color or pattern)

•  Satin (sasa): longer, clumpy, "greasy" looking coat that also darkens the base color
  
  
  

  

  Satin is a very rare coat type!
  
  

  
  

  More photos here: https://furball-campbells.jimdosite.com/farben-des-campbells/