Predict potential coat colors for rabbit offspring based on parent genetics at the C-locus (color/albino) and D-locus (dense/dilute).⚠ This calculator covers only 2 of 5+ loci controlling rabbit color. Complete phenotypes result from A, B, C, D, and E loci. Results shown are simplified approximations.
Last updated: March 2026
⚠ Important: This Calculator Is Simplified
This tool predicts outcomes for the C-locus (color/albino) and D-locus (dense/dilute) only. Real rabbit color genetics involves at least 5 major loci (A, B, C, D, E) plus numerous modifier genes. Results shown here ignore all other genetic factors. Actual offspring phenotypes depend on the complete genetic background, not just C and D. For accurate color predictions, consult breed standards and genetic resources that address all relevant loci.
Rabbit coat color is determined by multiple genes working together in complex interactions. The complete rabbit color genetics system involves at least five major gene loci (A, B, C, D, E), each controlling different aspects of pigment production, distribution, and intensity. This calculator focuses on only two of these loci: C (color/albino) and D (dense/dilute).
The C locus controls whether color pigment is produced at all. "C" (dominant) allows full color expression, while "cc" (recessive homozygous) produces REW (Ruby-Eyed White) or albino rabbits with no pigment. Rabbits with "Cc" appear fully colored but carry the albino gene and can produce REW offspring when bred with another carrier or REW.
The D locus controls pigment density and intensity. "D" (dominant) produces dense, full-intensity colors (black, chocolate, orange), while "dd" (recessive) dilutes colors to lighter versions (blue/gray, lilac, cream/fawn). A black rabbit with "dd" becomes blue; chocolate becomes lilac. These genes follow Mendelian inheritance patterns, allowing probability predictions for offspring colors based on the C and D loci alone.
Calculator scope: This tool predicts C-locus and D-locus results only. The information below shows all five major loci for reference, but the calculator uses only the C and D loci. To predict complete color phenotypes (including patterns, base colors, and other factors), you must consider all loci together.
Examples: Black (dense) dilutes to Blue. Chocolate (dense) dilutes to Lilac. Orange (dense) dilutes to Cream/Fawn.
Breeding two carriers:
Yes, if both black rabbits are Cc (carry the recessive albino gene). Each would pass 'c' to 25% of offspring, and when two 'c' alleles combine (cc), the kit is REW regardless of other color genes. This surprises breeders unaware of carrier status.
REW stands for Ruby-Eyed White (sometimes called albino). These rabbits have the 'cc' genotype, preventing all pigment production in fur. Eyes appear pink/ruby due to blood vessels showing through unpigmented tissue. REW is different from BEW (Blue-Eyed White from Vienna gene).
Test breeding reveals hidden genes. A single REW kit proves both parents carry 'c'. Dilute kits prove parents carry 'd'. DNA testing is available but expensive. Pedigrees help track carrier status across generations. Most breeders use phenotype + pedigree knowledge.
Genetics predict probabilities, not exact outcomes. A 25% chance means 1-in-4 on average, not exactly 1-in-4 every litter. Small litters may not match ratios. Large breeding programs across many litters approach predicted percentages.
Chestnut agouti, black, chocolate, blue, and REW are common in many breeds. Rare colors include lilac, orange, fawn, and tortoiseshell. Some breeds specialize in specific colors (e.g., Lilac breed, Silver Fox). Color standards vary by breed registry.
Each rabbit breed has an official standard listing recognized colors. Disqualified colors don't match breed standards (e.g., chocolate in breeds where it's not recognized). This maintains breed type consistency, not because colors are inferior—just non-standard.
Some color shifts occur. Kits may be born darker and lighten with age. Silvering breeds develop white guard hairs progressively. Molting can temporarily alter appearance. Sunlight fades black to reddish-brown. True genetic color doesn't change, but expression can.
Dense colors (DD or Dd) have full pigment intensity: black, chocolate, orange. Dilute (dd) reduces pigment density, creating lighter versions: blue (dilute black), lilac (dilute chocolate), cream (dilute orange). Dilute doesn't mean less colorful—many breeders prefer dilute shades.
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