Blueprint is a style that draws from the aesthetics of technical drawing, engineering documentation, and cyanotype (a historical technique for copying architectural plans that gave the entire genre its name).

In interface and web design, it manifests through visible grids and guide lines, descriptive labels reminiscent of technical drawing dimensions, and a monospaced font that complements the technical character of the whole.

The page or interface feels like something in the process of being described or documented, as if looking at a project rather than a finished product.

The grid ceases to be a hidden framework and moves beyond the design phase, becoming a component of the composition.

The style's roots trace back to NASA technical documentation and electronic schematics – materials designed more for content communication than aesthetics, which paradoxically developed a strongly recognizable visual language.