These colors are available as background colors for many Custom Blocks.  Click on the Style Options tab to find them.  Note that you can set an opacity. 

• 1 is completely opague. 
• .01 is almost transparent.
• .1 is somewhere in between

The website to visit for everything about UCR Branding and colors is brand.ucr.edu/ucr-colors

Primary Colors used on UCR Websites

Secondary Colors used on UCR Websites

Examples of where to apply these colors in Custom Blocks