A style guide is a reference document that defines the visual rules, parameters, and standards for a project, brand, or production, ensuring that all creative outputs remain consistent in appearance regardless of who creates them or when. In visual production, a style guide typically covers color palette, typography, compositional conventions, lighting approach, tone, and the range of acceptable visual treatments within the defined aesthetic.

For film and video production, a style guide extends to shot types, color grading approach, camera movement conventions, aspect ratio, and the visual mood that should characterize all content within the project. For brand content, it covers logo usage, color values, font rules, image treatment guidelines, and the visual identity standards that make content immediately recognizable as belonging to the brand. In game development, a style guide defines the art direction that all assets must adhere to: the level of stylization, the color and lighting approach, the proportions and silhouettes of characters and environments. A well-constructed style guide transforms individual creative decisions into a reusable system, allowing multiple creators and tools to contribute to a production without visual inconsistency. Style guides are living documents in active productions, updated as the visual language of the project evolves during development.

In AI generation workflows, a style guide takes on particular importance because generation models will interpret prompts differently across sessions without consistent guidance. Translating a style guide into a set of standardized prompt components, reference images, and trained style models ensures that AI-generated assets for a project maintain the same visual DNA across many generation sessions. Morphic's character model training and project organization features support this kind of style-consistent generation at scale.