Icons
Clear
Icons are simple and effectively convey their intended meaning. Avoid unnecessary complexity that makes the icon difficult to recognize. The goal is to communicate quickly and clearly.

Draw simple objects that are easy to identify.
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Embellish icons with unnecessary details.
Consistent
Icons follow a cohesive visual style across the user interface. This includes a consistent use of line weights, shapes, dimensions, perspectives, and general style. Consistency in designs enables users to quickly recognize functionality and navigate the interface more intuitively.

Reuse parts of other icons in the set to maintain visual harmony across all icons.

Use universally recognized icons.

Reinterpret or stylize universally recognized icons.
Universal
Universally recognized symbols and metaphors ensure icons are easily understood by a broad user base.

Leverage universally recognized symbols and metaphors to create new icons.

Relying on cultural-specific, niche, or outdated metaphors may not be suitable for all users.