A brand style guide is a digital rulebook that specifies every aspect of the look and presence of your brand. It can be used internally and shared with partners, media, and agencies to brief them on how to communicate with the brand properly. The brand style guide usually includes a logo, color palette, fonts, typography, imagery, and brand tone.
Example
All established and maintained brands have a proper brand style guide that is unique and can be used to maintain brand consistency. For example, look at Uber, and how it has kept the color theme and its style stunning and simple throughout the years.

Simplify Your Social Media Strategy.
With Social Champ, effortlessly apply the best practices you’ve just learned. Schedule posts, analyze performance, and engage with your audience—all in one place.