Siberian — Color Genetics & EMS Calculator

The Siberian Forest Cat expresses a broad FIFe-recognized color spectrum across all B-locus alleles, the full tabby pattern range, and both silver (Inhibitor I locus) and golden series, making it genetically one of the most versatile Northern breeds. Non-pointed Siberians (SIB) and their colourpoint variant the Neva Masquerade (NEM) are registered separately by FIFe, with NEM carrying mandatory cs/cs genotype; standard SIB are C/- at the colourpoint locus. Feline genetics programs for Siberian breeders require EMS codes and a reliable color calculator to manage the interactions of B-locus recessives, dilution, and the Inhibitor locus simultaneously.

Siberian colour genetics: frequently asked questions

Which recessive colours do Siberian cats commonly carry?
Chocolate (b) and cinnamon (bl) are accepted and their heterozygous carriers are phenotypically black. Dilution (d) carriers are phenotypically non-dilute. Because pointed Siberians (NEM) are registered separately, SIBs that carry cs from NEM × SIB matings must be registered as NEM if cs/cs. The Inhibitor (I) locus producing silver and golden series is common in SIB.
What colour restrictions apply to the Siberian breed standard?
Standard SIB must not express colourpoint pattern (cs/cs) — such animals must be registered as NEM. Dominant White (W) is permitted in SIB. Amber (e/e) is not recognized in FIFe SIB/NEM standard. Ticked tabby (25) is accepted in SIB (unlike some other semi-longhaired breeds).
Which coat patterns are typical for the Siberian?
All four tabby pattern variants (22, 23, 24, 25) are recognized. The ticked tabby (25) is notable as accepted in Siberian, distinguishing it from the NFO and MCO. Silver tabby and golden tabby are highly popular in SIB show lines. White-spotting (S locus) bicolors are accepted across the full grade spectrum.

Popular EMS Colors

SIB n 22Black Classic Tabby
SIB ny 22Black Golden Classic Tabby
SIB ns 22Black Silver Classic Tabby
SIB a 23Blue Mackerel Tabby
SIB f 22Black Tortie Classic Tabby
SIB n 03Black Bicolour

Calculate Colors for Siberian

Free online cat color genetics calculator. Select the breed and appearance of the sire and dam to predict kitten coat colors, patterns and probabilities based on feline color genetics.

Sire (Father)
Dam (Mother)

Enter the appearance of both parents to calculate color predictions.

Related pages and tools

Cattery Management SoftwareCat Color CalculatorKitten Name GeneratorCattery Name GeneratorPricingSiberian Breed Weight Charts