Concept:
In design, architecture, and visual arts, scale refers to the size of an object in relation to a known reference, most commonly the human body. It helps in understanding proportion, usability, and visual harmony.
Explanation:
Texture relates to surface quality, not size.
Scale is primarily concerned with how large or small an object appears when compared to human dimensions.
Height capacity of buildings is an absolute measurement, not a relative comparison.
Color scheme is related to aesthetics, not scale.
Thus, the concept of scale is most clearly associated with the relative size of objects when compared to human dimensions.