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

# Brand

> The RCP name, logo, and colors — and how to use them when you build on the protocol.

RCP is an open standard, and we want the ecosystem to signal compatibility
clearly. These assets and guidelines help you do that consistently. The name and
these guidelines are free to use to indicate that your project speaks RCP.

## The name

* The protocol is the **Retrieval Context Protocol**, abbreviated **RCP**.
* A specific wire version is written **RCP/1** (the `1` is the negotiated
  `protocolVersion`).
* Prefer *"speaks RCP"*, *"an RCP server"*, or *"RCP-compatible"* over
  possessive or product-like phrasings.

<Tip>
  One-liner you can reuse: **"RCP is one open, versioned JSON-RPC protocol so any
  RAG engine can expose embed, rerank, retrieve, graph, and index — and any client
  can consume it uniformly."**
</Tip>

## Logo

The mark ships in two variants tuned for light and dark backgrounds.

<Frame>
  <img src="https://mintcdn.com/rcp-6d6ef6d5/wb6rVi5wp17XKej1/logo/light.svg?fit=max&auto=format&n=wb6rVi5wp17XKej1&q=85&s=2d00ade2a473493ffe3963e9b779a51d" alt="RCP logo" width="220" data-path="logo/light.svg" />
</Frame>

<CardGroup cols={2}>
  <Card title="Light background" icon="download" href="/logo/light.svg">
    `/logo/light.svg` — dark mark for use on light surfaces.
  </Card>

  <Card title="Dark background" icon="download" href="/logo/dark.svg">
    `/logo/dark.svg` — light mark for use on dark surfaces.
  </Card>
</CardGroup>

## Colors

The palette is built around a single emerald primary with a lighter and darker
step for hover and dark-mode states.

| Role            | Hex       | Usage                              |
| --------------- | --------- | ---------------------------------- |
| Primary         | `#10b981` | Links, buttons, accents.           |
| Light           | `#34d399` | Hover states, light-mode accents.  |
| Dark            | `#059669` | Dark-mode accents, pressed states. |
| Surface (light) | `#fbfbf9` | Page background, light mode.       |
| Surface (dark)  | `#0d1117` | Page background, dark mode.        |

Type is set in **Lora** for headings and **Inter** for body — but any clean
serif/sans pairing preserves the feel.

## Using the mark

<CardGroup cols={2}>
  <Card title="Please do" icon="circle-check">
    Use the logo to show your project is RCP-compatible. Keep clear space around
    it. Use the variant that matches your background.
  </Card>

  <Card title="Please don't" icon="circle-xmark">
    Recolor or distort the mark, imply endorsement of a closed product, or use
    the name in a way that suggests RCP is your project rather than an open
    standard.
  </Card>
</CardGroup>

<Note>
  Building something on RCP? [Open an issue or PR](/community/contributing) and we
  are glad to link real-world engines, clients, and SDKs from the docs.
</Note>