> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://help.sayduck.com/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# Base colour (RGBA)

**Base color** is used to add solid color (RGB) or transparency (A ie. alpha value). This can done with the **RBGA color picker** or with a **RGBA texture**.

To use the **RBGA color picker**, click the color box and select a color or add a hex/rgba value. 

![](https://storage.crisp.chat/users/helpdesk/website/cae6f284ce714800/screenshot-2022-11-25-at-13375_p3j1bp.png)

With a **RGBA texture**, you can create more complex materials as in fabric or wood. 

![](https://storage.crisp.chat/users/helpdesk/website/cae6f284ce714800/screenshot-2022-11-25-at-13400_1s82jc0.png)