Why Does One Artwork Print Differently at Two Factories?

The same artwork file can leave two factories and come back as two different colours, and nobody has edited a single pixel. Cross-site colour matching is the discipline that keeps that drift inside a tolerance buyers accept: it separates ink lot variation, press settings and fabric absorption, then decides which of them is allowed to move the target. This guide explains where print colour drift starts, how to test for it before a bulk order, and the cases where chasing a perfect match costs more than it returns.

Sellers usually discover the problem at the worst moment: a reorder from a second site arrives and the navy no longer matches the listing photo, or the same red looks warmer on a restock.

Treat colour consistency as a process output rather than a file property. The file is identical in both cases, so the variable is everything the file passes through.

What Changes Between Two Factories?

Six variables move between sites, and most of them are physical. Ink lot, print profile, fabric lot, pre-treatment, curing temperature and operator habit each shift the result by a small amount, and small amounts add up.

Ink lot is the first and least visible. Two batches of the same ink code can sit slightly apart on the same substrate, and a site that refills tanks at a different interval sees that shift at a different time.

Print profile is the second. Every press is characterised with its own settings for ink limit, pass count and colour conversion, and a profile built for one machine does not transfer cleanly to another even when the model matches.

Fabric lot is the third and often the largest single contributor. Greige goods vary between mills and even between rolls, and a cotton jersey that takes ink one way can grey a mid-tone on a different lot. The same mechanism sits behind why apparel measurements drift between batches, and both show up in the same reorder.

Pre-treatment and curing are the fourth and fifth variables, and they are the easiest to control. A DTG underbase applied heavier on one line raises colour density; a cure that runs hot dulls a saturated red.

Operator habit is the sixth, and the one no document captures. Two technicians reading the same approved sample can pull different adjustments from it, which is why a physical approved standard matters more than a screenshot.

Which Decoration Methods Drift Most?

Drift is not spread evenly across methods. Screen printing holds a spot colour closely because ink is mixed to a reference and applied in a controlled laydown, so cross-site variation is mostly ink lot and squeegee pressure.

DTG drifts more because colour is built from ink combinations on a pre-treated surface, a point Printify’s published guide to decoration methods makes when it separates spot-colour work from process colour. Underbase thickness, fabric absorbency and cure all change the result, and a second site rarely matches the first on all three.

Sublimation behaves differently again. Colour is driven by transfer temperature, time and pressure onto a polyester surface, so a press that reads a few degrees differently produces a visible shift on light mid-tones.

Embroidery sits outside this comparison almost entirely, because thread is a fixed colour and the variable becomes sheen rather than hue. Where a design mixes print and embroidery, the printed panel usually needs to be matched to the thread rather than the reverse, and the embroidery thread and colour standards on a stretch or textured panel deserve a separate approval.

Read the table as a ranking of what to control first, not as a verdict on quality. A site that logs press settings will beat a better-equipped site that does not.

How Do You Set a Colour Target Both Sites Can Hit?

Start from a physical approved standard, produced on the fabric that will be used for the order. A standard printed on a different base gives both sites a target neither can reach.

Keep two copies and store them away from daylight, because a standard that fades is worse than no standard. One copy stays with the brand, one travels to each site.

Define the tolerance in plain terms both sides can check: the shade may sit within an agreed step under a stated light source, and a grader signs off against the physical sample rather than a screen. Specific numeric tolerances depend on the method and the buyer's standard, so they belong in the spec document rather than in a general rule.

Agree the light source too. Two panels that match under daylight can separate under warm shop lighting, and a buyer comparing a product photo to a delivered item is effectively doing that comparison.

Where a brand runs several storefronts on one catalogue, the same target has to survive both. The logic in multi-store POD strategy applies to colour: one approved standard per style protects every channel that sells it.

What Should Be Measured, and When?

Measure at three points: the first article off the press, the middle of the run, and the last article. A single check at the start catches a wrong setup but misses drift inside the run.

Compare against the physical standard and record the result, including the fabric lot and ink lot used. Without those two identifiers a mismatch cannot be traced later, and the next order repeats it.

Photograph the approved sample under fixed conditions and keep the image as a secondary reference. The photograph never replaces the physical sample, but it flags a problem early when a site sends a pre-production photo.

Repeat the check whenever a variable changes: new fabric lot, new ink supplier, new press operator on that line. A site that passed in March is not certified for July if the fabric source moved.

How Does Fabric Choice Change the Target?

Fabric absorbs differently by fibre, and that difference is larger than most sellers expect. Cotton takes DTG ink into the fibre and reads slightly duller, while polyester keeps ink closer to the surface and reads brighter.

Blends move the target again. A 60 cotton 40 polyester body can accept the same file and return a cooler mid-tone than a pure cotton body, so a standard approved on one base does not transfer to the other.

Stretch adds a second problem, because the panel changes shape during printing and curing. Heavier ink film on a stretch knit also cracks along the join when the garment moves, which is a durability question sitting next to the colour question.

This is why colour consistency work starts with the blank, not the artwork. Where a style is offered in several bases, each base needs its own approved standard, and the listing should show the base it was photographed on.

What Does Cross-Site Colour Matching Cost?

The cost is mostly coordination, not materials. Two physical standards, a written tolerance, and a log that both sites fill in cost very little; the expense arrives when a mismatch is found after a bulk run has shipped.

The second cost is time in the approval loop. A pre-production sample from each site adds days before bulk, which is why sellers consolidate that step into the first order at a new site rather than running it every season.

The third cost is the one nobody budgets: reprinting a run to correct a shade. On a large order that single event usually exceeds every coordination cost of the previous year, and it rarely happens on the cheap styles.

Where Cross-Site Colour Matching Fails

It fails when the two sites print on different blanks. No approval process fixes a cotton standard applied to a polyester body, and the honest answer is a separate standard per base rather than a tighter tolerance.

It fails when one site subcontracts part of the run without telling the brand. The colour may match the standard on the day of approval and still drift on the subcontracted portion, because a third press joins the process.

It also fails on very small orders, where the cost of two physical standards and dual approval exceeds the value of the run. In that case the practical move is to keep one site producing the style and accept that a second site will need a fresh approval before it prints.

A fourth case is a design that depends on a colour the method cannot hold. Neon and metallic effects vary by ink system, and no amount of cross-site discipline produces a match between a DTG print and a metallic film.

Frequently Asked Questions

Can two factories match the same printed colour exactly?

Usually not exactly, and expecting an exact match creates disputes. A workable target is a shade that sits within an agreed tolerance against one physical standard, checked under a stated light source.

Why does the same file look different on a reorder from the same site?

Because a reorder brings a new fabric lot, and often a new ink lot. Both shift the result slightly, and the shift becomes visible on mid-tones before it shows on strong primaries.

Should I send a digital file as the colour standard?

A file alone is not a standard. Send a physical approved sample printed on the production fabric, and use the digital file for artwork geometry only.

How often should the colour standard be re-approved?

Re-approve whenever a variable changes, such as a new blank, ink supplier or press. On an unchanged setup an annual check is typically enough to catch a faded reference sample.

Does colour drift affect search listings or reviews?

Indirectly, yes. Buyers compare the delivered item with the listing photo, so drift reads as a product not matching its description, and that complaint pattern is what damages a listing over time.

Cross-site colour matching works when it is treated as a documented handover rather than a hope. Name the standard, record the lots, check the run at three points, and accept that a second base needs a second approval. Print colour drift never disappears entirely, but it stops arriving as a surprise on a reorder. Brands running print across more than one production line can also review how each method behaves before choosing a site, and the colour matching across print methods comparison sets the baseline expectation for each route. Where the artwork comes from a partner studio, checking its production path is worth the same effort, as the overview of a production site for printed goods shows. Sellers scaling a decorated line can compare approved bases in the women's one piece swimsuit range before locking a standard.

Related Articles

Fabric Dyeing and Color Matching in Production

A Comprehensive Comparison of Two Leading Online Merchandising Providers

Why Do Custom Orders Pause for Artwork Approval?