Duotone Invoice

Two colours and nothing else — that is the whole premise of Duotone, one mapped to shadow, one to highlight, carried across every part of a invoice without exception. The discipline is the point: nothing here is accidental, and nothing is left to compete with the palette.

Every block, rule and photograph is mapped to the same two inks, including a true duotone treatment for any imagery, so the page reads as one continuous surface rather than a set of separate parts. Type is sans throughout, kept plain and confident so the colour pairing carries the visual weight instead of ornament.

This is the natural register for brands that already know exactly who they are — design-forward studios, agencies, and companies presenting a considered brand system. Reach for it whenever a invoice needs to look deliberate and assembled rather than thrown together under deadline, and confidence matters more than variety.

Because there are only two inks in play, hierarchy has to come from value and weight rather than a third accent colour, so a well-chosen pairing does noticeably more work here than in a fuller palette. Get that contrast right and a invoice looks inevitable rather than merely restrained.

The two inks used here are simply this demonstration's pick, not a fixed palette. Run a invoice through Waxe and it selects a duotone from the reader's own brand colours, rebuilds the type and logo to match, and hands the document back ready to export.