Knowledge RAG
Submit principleDesign Knowledge Base
Community-maintained principles reviewed before publication and retrieved as Agent design constraints.
5 published principles / 192 in library
Typography Color Accessibilityforms / placeholder
Placeholder Is Not a Label
Placeholder Is Not a Label turns a frequent interface judgment into an executable constraint before generation.
Placeholders are useful for examples, not as the only instruction or critical guidance.84%Visual Foundationscharts / dashboardReadable Dashboard Charts
Readable Dashboard Charts turns a frequent interface judgment into an executable constraint before generation.
Operational charts are often scanned quickly; small-chart readability matters more than expressive form.84%Typography Color Accessibilitysurface / colorReadable Color on Surfaces
When surfaces change, text, borders, icons, and state colors must be recalibrated.
The same color value has different strength on different backgrounds and should not be reused mechanically.82%Typography Color Accessibilitycontrast / accessibilityLegibility Contrast
Text contrast must serve reading first, especially for small text, disabled states, notes, and button labels.
Low contrast turns polish into unusability, especially on mobile and in difficult lighting.82%Typography Color Accessibilitytypography / readabilityLine Height and Measure
Long text needs comfortable line height and measure; dense interfaces still need readable text.
Overwide lines lose place, tight line height feels cramped, and loose line height reduces useful density.82%