Much attention is currently being paid to developing universally designed solutions. Tactile maps, designed for people with visual impairments (PVI), require both graphic and tactile content. While many more- or less-official guidelines regarding tactile symbols exist, the subject literature lacks clear guidance on creating legible, highly contrasting graphic symbols for visual perception by those with residual vision. This study specifically addresses the application of colour, a key graphic variable that Is most often used to differentiate area symbols. We wanted to verify whether it is possible to choose a universal qualitative colour palette for tactile maps. We have proposed four different palettes, each with eight colours, that were later evaluated in a controlled study by 16 PVI with varying sociodemographic characteristics, using the VIEW model. The model is widely applied in the area of marketing research and considers the following aspects: Visibility, Informational, Emotional Appeal, and Workability. Our results indicate a lack of unanimity in choosing the best qualitative palette. The results of three palettes are comparable, with a subtle preference for the palette optimized for colour differences using the Python algorithm. Notably, the palette commonly used in official tactile maps in Poland received the lowest scores in every analysed dimension.

中文翻译：

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触觉地图定性调色板的评估

目前，人们非常关注开发通用设计的解决方案。触觉地图是为视觉障碍人士 (PVI) 设计的，需要图形和触觉内容。尽管存在许多或多或少关于触觉符号的官方指南，但主题文献缺乏关于创建清晰的、高对比度的图形符号以供残障人士视觉感知的明确指导。这项研究专门讨论了颜色的应用，颜色是最常用于区分区域符号的关键图形变量。我们想验证是否可以为触觉地图选择通用的定性调色板。我们提出了四种不同的调色板，每种调色板有八种颜色，随后由 16 个具有不同社会人口特征的 PVI 使用 VIEW 模型在对照研究中对其进行了评估。该模型广泛应用于营销研究领域，并考虑以下几个方面：可见性、信息性、情感吸引力和可操作性。我们的结果表明，在选择最佳定性调色板时缺乏一致意见。三个调色板的结果具有可比性，但对使用 Python 算法针对色差进行优化的调色板略有偏好。值得注意的是，波兰官方触觉地图中常用的调色板在每个分析维度上得分最低。