Value as the Primary Hierarchy Tool
In typography, value (lightness) is a more reliable hierarchy signal than hue. Dark text reads as primary; lighter text reads as secondary or supplementary. This reflects how the eye prioritizes contrast: high-contrast elements demand attention, lower-contrast elements recede. A three-level hierarchy using a near-black primary, a medium gray secondary, and a lighter gray tertiary creates clear reading structure with no font changes, no color shifts, and no risk of hue combinations that clash. The system works because it uses the same underlying perceptual mechanism as bold/regular/light weight hierarchies — contrast level — but through the color dimension rather than the stroke dimension.
