Free Online Material Design Color Tool
Recently Google added a new tool to Material Design toolbox. Color Tool is a free online site to create UI color palettes and test accessibility on the fly while creating a color scheme.
How to create color scheme using Color ToolYou will need to visit Color Tool page. On the right side of the screen, you can pick some of the predefined colors for Primary and Secondary color under Material Palette tab.
If you want to create custom color palette then click on the Custom tab then click on the color wheel or type hex color number.
User InterfacesThere are two tabs on the left side of the screen: User Interfaces and Accessibility.
On the User Interfaces tab, you can see 6 different previews of the user interface with current color scheme applied (Primary + Secondary color).