Standardization of color visualization for geospatial data in agrochemical land passportization

Abstract

The article considers the problem of standardizing the color visualization of geospatial data during the management of agrochemical land passportization databases for agricultural purpose, the development of thematic maps, electronic atlases, and the operation of geoportals. Discrepancies between traditional subtractive print color models (CMYK, Pantone) and digital additive display models (RGB, HEX), as well as design models (HSL/HSV), were analyzed. The necessity of transitioning from verbal color descriptions in regulatory documents to the creation of technical specifications and reference color matrices (Cartographic Design System) with dual encoding (sRGB for web services and Coated FOGRA39 for printing) is substantiated. This approach prevents oversaturated shades, reduces visual fatigue, and ensures compliance with contrast and accessibility standards (WCAG 2.1). In accordance with the approved "Methodology for Agrochemical Land Passportization", 6-level spectral scales of soil nutrient availability and 6-level spectral scales of soil contamination have been formalized.Received: 12.08.2026;Accepted: 30.08.2026;