The color palette starts with primary colors and fills in the spectrum to create a complete and usable palette for Android, Web, and iOS. Google suggests using the 500 colors as the primary colors in your app and the other colors as accents colors.
You can use any of these colors like .bg-"color-name"-"color-code"
or color-"color-name"-"color-code"
or border-"color-name"-"color-code"