EMS colour codes explained

What those short EMS codes after a cat’s name actually mean — breed, colour, pattern and more, with a worked example.

EMS stands for the Easy Mind System — a standard shorthand used across GCCF and FIFe to describe a cat’s breed and appearance in a few letters and numbers. Once you can decode it, you can read any cat’s essentials instantly.

The breed code

The first part is the breed: for example SIA (Siamese), BSH (British Shorthair), OSH (Oriental Shorthair). It’s always three letters.

The colour code

Next comes a colour letter — for instance n for seal/black, a for blue, b for chocolate, c for lilac. The same letters are used consistently across breeds.

Pattern and other modifiers

Additional numbers and letters describe pattern and features — tabby, bicolour, white markings, and so on. For example 03 indicates bicolour, 21 indicates a tabby/agouti pattern.

A worked example

BSH a 03 reads as a British Shorthair (BSH), blue (a), bicolour (03) — a blue-and-white British Shorthair. Simple, once it clicks.

Never look one up again

Perfect Pedigrees translates breed, colour, pattern and eye colour into the correct EMS code automatically as you enter a cat — no charts, no guesswork.

Ross

More from the Perfect Pedigrees Blog

Registering a Litter with the GCCF: A Breeder’s Walkthrough

A step-by-step breeder's walkthrough of registering a litter with the GCCF: what you submit, getting EMS colours right, timing, and easy records.

GCCF vs TICA Pedigrees: What’s Different and Why It Matters

A GCCF judge compares GCCF and TICA pedigrees and registration, what differs, and what UK cat breeders need to know about both.

Line-Breeding vs Inbreeding: A Judge’s Guide to Genetic Diversity

A GCCF judge explains line-breeding versus inbreeding, what COI and diversity figures mean for your programme, and how to use them for better pairings.

Get early access

Discover how Perfect Pedigrees can transform your business with a one-on-one demo with one of our team members tailored to your needs.