> For the complete documentation index, see [llms.txt](https://styles.bjcp.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://styles.bjcp.org/bjcp-2021-beer/introduction-to-beer-styles/color-reference.md). # Color Reference *Note that SRM is a measure of beer color density more than hue, tint, or shade. Keep this in mind when attempting to use only SRM numbers when describing beers. Within these Guidelines, beer color descriptors generally **approximate** this mapping to SRM values:* Straw 2-3\ Yellow 3-4\ Gold 5-6\ Amber 6-9\ Deep amber/light copper 10-14\ Copper 14-17\ Deep copper/light brown 17-18\ Brown 19-22\ Dark Brown 22-30\ Very Dark Brown 30-35\ Black 30+\ Black, opaque 40+\\ Do not be overly pedantic about ascribing perceived color names to SRM references, as viewing conditions often greatly influence this perception, individual perceptions vary, and hues outside of the yellow-to- brown spectrum can skew results. In the event of apparent contradictions, favor the named descriptions over the numbers. --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://styles.bjcp.org/bjcp-2021-beer/introduction-to-beer-styles/color-reference.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.