Legend

Overview

Map data encoding to named series or thresholds. It converts domain state into an understandable, traceable and accessible interface contract.

When to use

Use HE/Legend when you need to map data encoding to named series or thresholds. Keep its role distinct from transport freshness, animal-health severity and model confidence.

Example

<ul class="he-legend"><li class="he-legend__item"><i class="he-legend__swatch"></i>Ambient</li><li class="he-legend__item"><i class="he-legend__swatch" style="--he-legend-color:var(--he-color-data-categorical-2)"></i>Body</li><li class="he-legend__item"><i class="he-legend__swatch" style="--he-legend-color:var(--he-color-data-categorical-3)"></i>Baseline</li></ul>

Anatomy

Anatomy stays identical in Pasture and Atlantic. A responsive layout may wrap or stack parts, but reading order and focus order remain equivalent.

Variants and states

Accessibility

Interactive legend controls are buttons with pressed state and include marker shape in the name.

• Maintain a visible keyboard focus indicator and a logical focus sequence.
• Never rely on colour alone for operational, freshness or severity state.
• Keep touch targets at least 44 × 44 px unless the target is an inline text link.

Cross-platform contract

Related components