Design Principles for Effective Business Stationery

Stationery is your brand at arm's length

A customer might meet your website on a phone in a bus queue, but a letterhead arrives in the hand. That physical moment — opening an envelope, unfolding a compliments slip tucked into a parcel — carries a different kind of weight. It is also where inconsistency shows up fastest. A logo in one blue online and a slightly different blue on the letterhead reads as carelessness, even to people who could not name what is wrong.

The reassuring news is that effective business stationery is not complicated. It is a discipline of margins, hierarchy and repetition, applied across three or four small formats that all have to survive real-world printing, franking machines and postal sorting. Get the fundamentals right once and every reprint becomes straightforward.

Letterheads: set the margins before you set the type

Most letterhead design goes wrong at the edges. Before choosing a typeface, decide where nothing may sit. A clear margin of 12–15mm around all four sides keeps content away from the trim and gives the page an unhurried feel. The middle of the sheet should stay largely empty; a letterhead is a frame, not wallpaper.

• Header zone: logo, trading name and core contact details — phone, email, website. Keep it to three lines where possible.
• Footer zone: registered company number, registered office address, VAT number and any professional accreditation. Set these at 8pt or slightly smaller; they are reference material, not a headline.
• Address block: if you use window envelopes, place your address so it falls inside the window. A standard DL window sits roughly 20mm from the left edge and 45mm from the bottom, so build to that rather than guessing later.
• Background tints: anything above about 8% ink coverage will show through on double-sided printing and can confuse scanners. If you want a tinted panel, keep it away from the address area.

Body text of 10–11pt in a serif or neutral sans works for nearly every sector. Anything smaller than 9pt starts to look like you are hiding something.

Compliments slips: small, useful, easy to get wrong

The compliments slip is the most under-designed item in the set, which is a shame because it is often the piece people keep. The usual DL format — roughly 210 × 99mm — suits a short handwritten note, a name and a signature.

Keep the printed content to one corner: a small logo, one line of contact information, perhaps a single accent rule. The rest should be white space, because handwriting needs room and a busy slip becomes unreadable the moment a pen touches it. Print on 250–300gsm uncoated board. Coated stock looks glossy and repels ballpoint ink; uncoated board takes a pen properly and feels considered in the hand.

If you use pads, choose a glued edge that releases cleanly. Nobody enjoys a slip that tears down the middle.

Envelopes: design for sorting machines and tired eyes

Envelopes are engineering as much as design. Choose the format to match how the contents fold: DL for A4 folded in thirds, C5 for A4 folded once, C4 for documents posted flat. Anything unusual will cost more to post and may not fit standard franking equipment.

• Address zone: leave a clear rectangle roughly 90 × 20mm for the address, in dark text on a light background. Automated sorting reads contrast, not decoration.
• Franking space: keep the top-right corner free of print so a franking mark or stamp sits cleanly.
• Return address: put it on the reverse flap rather than crowding the front. It looks tidier and still tells the postal service where an undeliverable item belongs.
• Paper weight: 100–120gsm gives an envelope enough body to arrive looking respectable. Very thin stock creases and scuffs in transit.

Plastic-free window envelopes are now widely available and worth specifying if sustainability matters to your customers — which, increasingly, it does.

Colour, type and paper: making the set feel like one family

Consistency is mostly a matter of restraint. Pick one primary brand colour and one accent, then use them in the same proportions across every item. If a colour must match exactly — a signature red, for instance — specify a Pantone spot colour rather than hoping a four-colour build will hold. Where spot colour is not practical, supply CMYK values and accept that some shift is normal between paper stocks.

Choose paper once and commit. Uncoated stock makes ink look softer and slightly duller; coated stock makes it brighter and more saturated. Switching between the two across a set is the quickest way to make branded materials look mismatched, even when the artwork is identical.

For type, one well-chosen family in two or three weights will usually outperform two unrelated typefaces. Set a clear hierarchy — heading, subheading, body, legal line — and apply it everywhere.

Proof, test and order sensibly

Before anything goes to press, check the practical details that cause most reprints:

• Supply print-ready PDFs with 3mm bleed, crop marks, embedded fonts and images at 300dpi.
• Run a test print on the actual stock using the office printer. Laser printers run hot, and some uncoated boards curl or smudge.
• Check duplex alignment by printing a double-sided sheet — a 1mm shift is far more obvious on a letterhead than on a brochure.
• Store a dated master file so reprints in two years match the originals.

Order in sensible quantities: enough to justify the setup cost, not so many that a rebrand leaves you with a cupboard full of obsolete letterheads. Stored flat and away from sunlight, good stationery keeps well — and every sheet you send out will quietly do the same job of representing you.