Sketch 3 plugin generate a palette of Google material design color for you.
| Action | Key |
|---|---|
| Hue | ⌃⇧H ( Control + Shift + H ) |
| Value | ⌃⇧V ( Control + Shift + V ) |
| Swatch | ⌃⇧S ( Control + Shift + S ) |
You can find this plugin on Sketch Toolbox.app, so you just search and download it.
Or add Material Design Color Palette folder to the plugin folder /Library/Application Support/com.bohemiancoding.sketch3 or ~/Library/Containers/com.bohemiancoding.sketch3/Data/Library/Application Support/com.bohemiancoding.sketch3/ or find it via menu option in Sketch 3 Plugins / Reveal Plugins folder...