Weight contrast
Hierarchy created by pairing clearly different font weights — often at the same size — instead of changing the type size.
Example usage
“Keep the row height fixed: the label is regular, the value is semibold — weight contrast does the work.”
Editor’s note
Weight contrast is the quietest hierarchy tool: it ranks information without disturbing the layout the way size changes do. The trap is adjacent weights — regular against medium reads as a rendering error, not a decision. Skip at least one weight; contrast must be unmistakable to count as contrast.