Approve a physical color reference
Approve luggage lining color against an identified physical standard on the intended fabric, then agree how production lots will be compared with it. A photograph or a color name such as ‘navy’ helps start the conversation but leaves too much room for interpretation when bulk fabric arrives.
Send a retained swatch or a clearly identified commercial color reference, including its material format and edition where applicable. Ask for lab dips on the proposed lining substrate. If a sample comes back on a substitute fabric, mark it as provisional: you still need approval on the actual construction and finish.
Label every dip with the supplier, fabric reference, color code and submission version. Keep the rejected versions with comments until the final choice is clear. ‘Less red than sample B’ is useful feedback only when both teams can identify sample B.
Compare the lining beside its neighbors
View the lining alongside zipper tape, binding, mesh and any other component intended to match. Datacolor explains that two materials can match under one light source and differ under another, a problem called metamerism. A lining-to-zipper match therefore needs agreed lighting, not just approval of the fabric in isolation.
Specify the light sources used for approval and record how the swatches are presented. Compare the intended visible faces in the same direction, and agree backing and folding for translucent material. Keep the retained reference protected from contamination and unnecessary light exposure.
Where instrumental color measurement is required, agree the color-difference formula, instrument settings, specimen preparation and tolerance with the buyer's color team. A bare ‘Delta E’ figure is incomplete. Do not insert a universal tolerance into every order; a numerical result and the visual decision must refer to the same approval procedure.
A good match can still transfer color
Color matching asks whether the new lining looks right. Colorfastness asks how its color behaves during specified exposure or contact. Approval of one does not settle the other. Select tests around the intended use and care instructions instead of requesting an undefined ‘colorfastness pass.’
AATCC's public method summaries distinguish rubbing transfer from other exposures. TM8 addresses dry and wet rubbing; the association lists TM107 for water and TM163 for storage dye transfer. Use those names to discuss the relevant risks with a laboratory, which should confirm applicability and the required method edition. These tests are not interchangeable.
| Purchase concern | What to define before testing |
|---|---|
| Dark lining touching light clothing | Contact scenario, selected transfer method, assessed fabric face and acceptance requirement |
| Damp contents or moisture exposure | Exposure to be represented and whether staining, color change or both will be evaluated |
| Fabric stored folded against another component | Contact materials, storage assessment and how the result will be judged |
| A stated cleaning instruction | The actual care procedure and the checks required after it |
Decide how bulk shade variation will be handled
Ask the supplier to identify dye lots and keep roll references traceable through cutting. If two lots differ visibly, mixing their panels within one suitcase can create a problem that neither roll reveals on its own. Agree whether lots may be mixed within a finished unit and who authorizes any exception.
Request production shade submissions tied to the actual lot, rather than another development dip. Inspect representative material for side-to-side and lengthwise differences using the agreed sampling plan. If the submitted cutting does not represent all rolls, record what remains unchecked.
State the response to an out-of-tolerance lot before shipment. Options such as sorting by shade, restricting use to matched sets, reprocessing or replacement require a documented buyer decision; the supplier should not silently substitute a nearby color.
When two teams disagree about the shade
Before ordering another lab dip, compare the approval conditions. Confirm that both teams hold the same reference and submission, then check lighting, backing, specimen orientation and whether the evaluated material has its final finish. Send photographs to explain the problem, but settle the decision against the agreed physical references.
Write the remaining issue precisely: a hue difference beside the zipper, a mismatch under one light source, or a lot that falls outside the approved shade range. Assign the next submission to that issue. Keep the colorfastness report separate so a discussion about appearance does not accidentally waive an unresolved transfer requirement.