The safe zone for the icon should equal four times the height of the period.
The safe zone for the wordmark should equal four times the height of the period.
For specific use for maximum legibility against light backgrounds.
For specific use for maximum legibility against dark backgrounds.
Specifically for maximum legibility and impact. Used when the application is too small to see from a distance, or to obtain visibility, and where exposure time is short (e.g. social profile picture).