The name comes from mathematics: a lemma is a small, proven proposition used as a building block for a larger proof. Lemma is that proven, reliable layer underneath every agent decision. These are the marks, colors, and letterforms that carry it.
Logo
Lemma is the foundation and makes the invisible visible. Use the symbol alone at 16–32px, the full logotype from 80px wide. Never scale the wordmark below 10px.
Built on a single primary hue, a deep and precise indigo that communicates reliability and technical rigor. Lady Blue #755CFE is the anchor of the brand: it should appear in every application of the identity. Hover to inspect, click to copy.
Core palette
Neutral extensions: never decorative, they serve hierarchy
Typography
A layered typographic system where each size has a clear role. The hierarchy is strict: mixing sizes outside their intended roles breaks the system's legibility. Typefaces are licensed and not available for download.
