---
title: "MTPolylineLayerOptions.outlineColor | Mobile sdk | Mobile sdk android | Android"
description: "outlineColor"
---

> For AI agents: a documentation index is available at [/llms.txt](https://docs.maptiler.com/llms.txt). Markdown versions of all pages are available by appending .md to any URL.

# MTPolylineLayerOptions.outlineColor

val [outlineColor](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.helpers/-m-t-polyline-layer-options/outline-color/): [MTStringOrZoomStringValues](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.helpers/-m-t-string-or-zoom-string-values/)? = null