Tactile Contrast

The degree of perceptible difference between adjacent or co-occurring tactile elements, analogous to visual contrast in graphic design. In tactile graphics, sufficient contrast between neighboring regions is essential for readers to identify boundaries and distinguish different areas of information. Tactile contrast can be achieved through differences in texture height, density, roughness, pattern direction, stitch type, or whitespace. Research shows that maximizing both local contrast (between neighboring regions) and global contrast (across the entire graphic) improves tactile graphic comprehensibility.