red, tan
CornFlower
Red, tan, per, and mar are crayon colors with three letters that spell the color.
They all have 3 letters, but "red" and "tan" have exactly 3 letters.
A large container name three letters long could be box or bin.
black white green
The word "did" is three letters long.
The three primary colors are Red, Blue, and Green.You can remember them easily when you remember Roy G Biv. The capitalized letters are the three Primary Colors.
There are no countries that have only 3 letters.
cog
Isle of Man
ELL
There are two types of whales that have only three letters in their name. The Fin whale and the Sei whale.