Colour and Bleed Basics: Preparing Flag Artwork for Print

Why flag artwork follows its own rules

Most artwork that arrives at a flag supplier was created for a screen, a business card or a banner. Flags are different. The design is printed onto woven or knitted fabric, cut to shape, folded, stitched and then viewed from a distance — often outdoors, often from the reverse side, and often with the sun behind it. Every one of those steps affects how colour behaves and how much of your design actually survives to the finished edge.

Getting colour and bleed right at the artwork stage is what separates a clean flag from a conversation about who approved the file. This guide covers the basics we walk through with importers, distributors and online sellers every week.

Finished size is not print size

The first number to agree on is the finished size: the measurement of the flag once hems are folded and sewn and the heading is attached. That is not the size of the printed panel. A hem consumes fabric, and the heading or sleeve on the hoist side consumes considerably more. Artwork must therefore be supplied larger than the finished size, with the excess running past the finished edge as bleed.

How much bleed does a flag need?

Exact allowances vary by construction, so confirm them with your supplier before you build the file. The table below shows the conventions we work to for typical hemmed, headed flags.

Element	Typical allowance	Why it matters
Bleed past each hemmed edge	10–15 mm	The fold eats into the printed area. Without bleed you risk an unprinted sliver appearing along the seam.
Extra allowance at the hoist	50–75 mm	A sleeve or heading tape folds back on itself; some designs are intended to continue onto it.
Safe area for text and logos	25–50 mm inside the finished edge	Stitching, fold width and fabric movement all vary slightly. Keep anything you care about well inside.
Fine lines and small type	Keep inside the safe area	Hem stitching can clip elements placed too close to the edge.

Artwork supplied exactly at finished size is one of the most common causes of delay in a flag order. If the design runs to the very edge — a border, a stripe, a full-bleed background — the bleed must be part of the file, not added afterwards by stretching the image.

Colour modes: RGB, CMYK and spot colours

RGB

RGB is an emissive colour space built for screens. Its brightest greens, oranges and blues sit outside what fabric printing can reproduce, so a design that looks vivid on a monitor can arrive looking flatter in cloth. Send artwork in CMYK or as spot colours, not RGB.

CMYK

CMYK works for photographic and full-colour designs. It is worth remembering that on fabric the ink sits in a weave rather than on a coated sheet, so heavy four-colour builds tend to look slightly muted compared with the same file printed on paper. If your design depends on a large area of dense, saturated colour, say so in the brief.

Spot colours

Screen printing uses one screen per colour, and each additional colour adds setup and production cost. Many flag price lists are structured per colour for exactly this reason. Spot colours referenced to a Pantone number give more predictable results than process builds, particularly for corporate colours and flat brand marks.

Practical rules that avoid most colour disputes:

• Mark which colours are brand-critical and which are decorative.
• Give Pantone references with the book you used (coated or uncoated), because the same number reads differently in each.
• Named spot colours should be consistent across every file in the job.
• Metallic and fluorescent references are difficult to reproduce on flag fabric — check before designing around them.

What fabric does to colour

The printing method changes the result as much as the file does.

• Dye sublimation turns ink into gas that bonds into polyester. Edges of shapes look soft, and the visible colour depends partly on the base cloth and the light falling on it.
• Screen printing lays ink on the surface of knitted polyester, so colours appear more opaque and hold their shape.
• Backlighting flattens and lightens everything. A flag designed for a pole in direct sun will read differently from the same flag against a wall.
• The reverse side of a single-sided flag shows the image mirrored and noticeably lighter.

None of this is a defect — it is how printed textile behaves. It is simply worth deciding at the design stage whether the flag will mostly be seen lit from the front, backlit, or from both sides.

White, black and gradients

White is the trickiest colour on a flag. On white base fabric, white in the artwork usually means “no ink”, so a white logo on a coloured field is the cloth showing through rather than a printed white. It may not match the printed areas exactly, particularly in bright light. On darker base fabric, white has to be printed as a base layer, which changes the number of colours in the job.

Black does not need a heavy build. Four-colour blacks add ink without adding much depth on textile, and can look muddy. Ask your supplier which black build they prefer for screen work.

Gradients are best used sparingly. Long, smooth blends across a large flag can show visible stepping in the weave, and a gradient that looks subtle on a monitor may look flat at a distance. Solid blocks and clearly stepped colour changes are more predictable.

Edges, borders and

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