If you're looking for a word related to the color blue, here are some possibilities:
* Bluest: The superlative form of "blue," meaning the most blue.
* Bluish: Describing something that is slightly blue.
* Blue: The color itself.
* Bluey: A slang term for something that is blue, often used for objects or clothing.
It's possible you are thinking of a different word altogether. Can you give me more context?