The color is a characteristic that can be easily recognized by sight, however, each Pokémon's color was made official with Pokémon Ruby and Sapphire, where, in the Pokédex, it is possible to arrange Pokémon by this distinction.
Each Pokémon is classified under one color, even though it has more than one color in its body. In most cases, the Pokémon's color is the one that predominates over its body. If the Pokémon has multiple forms, each form has its own color and may be categorized under a different color if it radically changes the colors of its body. Shiny Pokémon do not have their own colors.
The colors used for the classification are red, blue, yellow, green, black, brown, purple, gray, white and pink.
- The only Pokémon that changes its color depending its gender is Meowstic, the male being blue and the female white. Frillish and Jellicent change color as well, being blue while male and pink while female, however, in the Pokédex they're all white.
- The Pokémon that can be found in the highest amount of categories is Minior, thanks to its eight different forms.
- Minior's Meteor Form is brown.
- Minior's Red and Orange Cores are red.
- Minior's Yellow Core is yellow.
- Minior's Green Core is green.
- Minior's Blue and Indigo Cores are blue.
- Minior's Violet Core is purple.
- There is no orange category. Orange Pokémon are found in the brown, red and yellow categories.
- Certain Pokemon are often thought to be discolored or miscategorized: