> ## Documentation Index
> Fetch the complete documentation index at: https://langchain.idochub.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# Chroma

> [Chroma](https://docs.trychroma.com/getting-started) is a database for building AI applications with embeddings.

## Installation and Setup

<CodeGroup>
  ```bash pip theme={null}
  pip install langchain-chroma
  ```

  ```bash uv theme={null}
  uv add langchain-chroma
  ```
</CodeGroup>

## VectorStore

There exists a wrapper around Chroma vector databases, allowing you to use it as a vectorstore,
whether for semantic search or example selection.

```python theme={null}
from langchain_chroma import Chroma
```

For a more detailed walkthrough of the Chroma wrapper, see [this notebook](/oss/python/integrations/vectorstores/chroma)

## Retriever

See a [usage example](/oss/python/integrations/retrievers/self_query/chroma_self_query).

```python theme={null}
from langchain.retrievers import SelfQueryRetriever
```