Loghue

Loghue is a theoretical concept in color theory and visual communication that describes how hue, brightness, and saturation interact with logical structure to convey meaning. It treats color and spatial arrangement as a system of signs whose interpretation depends on established rules of categorization and inference.

Origin and scope: The term blends elements of logic and hue and arose in cross-disciplinary discussions of data visualization and design theory in the early 21st century. It is used to analyze how color schemes support information processing across media and contexts.

Principles: Core ideas include coherence between color coding and data categories, perceptual contrast to separate classes, contextual alignment with task and narrative, symbolic semantics tied to cultural conventions, and accessibility considerations for viewers with color vision deficiencies.

Applications: In practice, loghue guides the design of dashboards, maps, and educational materials by proposing color grammars readers can intuitively follow. It also informs branding and user interface design by aligning color with function and meaning, and it supports storytelling by modulating mood and pacing through color sequences.

Limitations and critique: Critics point out that color interpretation varies across cultures and devices, and that overreliance on color can exclude some users. Proponents emphasize empirical testing, readable legends, and combinations with non-color cues to ensure robust communication.