Cyanotype blueprint printing and modern engineering drawings. White lines on deep blue. Grid systems, annotation lines, dimension markers. Precision, professionalism, technical trust.
Control elements — engineering standard
Primary — white fill / invert on hover
Secondary — white border + white text
Callout — orange annotation accent
Cyanotype spectrum — 5 engineering-labelled swatches
BLUEPRINT BLUE
#1e3a5f
Primary background — deep cyanotype base
WHITE LINE
#ffffff
Primary line — vector ink on cyanotype
LIGHT BLUE
#4a90d9
Accent A — active states, highlights
DIMENSION ORANGE
#ff6b35
Accent B — annotation, callout lines
PALE BLUE
#a0c4e8
Accent C — muted text, grid guides
Orthographic framework — 24px base unit
Column layouts — engineering grid divisions
Engineering-standard data sheets
Orthographic framework
24px base unit — 4px minor grid
The underlying coordinate system establishes every element's position. Grid lines are always present at 15% opacity, providing spatial context without visual noise.
Specification compliance — do and do not
Blueprint draws from the cyanotype tradition — images produced through the action of light on chemistry. Every line has a reason. Every annotation serves the engineer. Form follows function absolutely: decoration is a tolerance violation.
— Blueprint Design Standard · Rev 1.0 · 2026
Callout lines, markers, and measurement labels
Horizontal callout with arrowheads at both terminations. Label floats at center.
Vertical callout. Label rotated 90 degrees for inline reading with engineering drawings.
Corner brackets mark panel boundaries. Standard 4–5px arm on each corner.