Last Updated on June 30, 2026
What Is Shade Variation in Denim?
Shade variation in garments is caused mainly due to fabric problems. Shade variation in a garment occurs when different garment components have different depths of colors (shade) or mismatch of shades in garment parts of the same garment. Shade variation in garment comes due to shade variation in the fabric in an order. Shade problem is a common problem in denim wash. Denim manufacturer has to face after-wash shading problem issue frequently. Unexpected shading problems may arise after denim garments wash. Because it is a mandatory problem in this arena and it can’t be minimized by using the best effort. Many good denim experts have experimented with it and given their opinion. But even after that, Sade’s problem was not completely solved. And even it may not solve in the coming days. It’s running and inevitable problem for denim manufacturers. Many mills now control it with roll-wise shade coding, standard light boxes, and spectrophotometer checks, but the issue can still appear when fabric comes from different dye lots or when washing recipes are not kept exactly the same.
Why Does Shade Variation Happen in Garments?
Shade variation is one of the common problems found in garments that are made of dyed or printed fabrics. A garment with shade variation is considered a faulty garment. Suppose there is an order for 50,000 pieces of denim long pants. Then fabric requirement will be about 50,000×1.5= 75,000 yards of fabric. Generally, denim fabrics come in rolls of 100 to 120 yards. So, our roll will be 625 to 650. Assume 650 fabric rolls are now in your hand. Now after making 650 rolls of blankets, it is found that there are ten-twelve seeds. Bayer knew very well that there were 10-12 shades but he would never approve of so many shades. Make sure to approve three or four shades. Now the question remains, what to do with the rest of the shades? The practical answer is to keep each shade in a separate lot, record the roll number on the bundle ticket, and only merge rolls after the approved tolerance is checked. If the buyer has only a narrow tolerance, the extra shades should be quarantined first instead of being mixed into the main bulk.
How to Control Shade Variation in Denim Wash
Shade is the depth of color or hue. It is a common word in dyeing, printing, and finishing units of a textile mill. Shade variation control is the most important thing in the dyeing and printing stage in the textile industry. Shade variation control in garments form is a big challenging task, all the variations need to find out in fabric inspection stage. Garments maker needs to complete the bulk fabric shade band submission. No bulk production can begin until the merchandiser has signed off the Color Continuity. In many factories this sign-off is backed by a shade band card and a buyer tech-pack limit, checked under standard D65 lighting and, when available, a spectrophotometer, according to ISO 105-A02 and AATCC EP1. Anyway after sewing when the garment goes to the washing plant, the washing plant will try to keep the shade within the 3-4 key shade approval according to buyer guideline. But what about the remaining shades? To minimize shade variation within a garment and from garment to garment when compared to the approved buyer or manufacturer color standard. Now we are going to narrate which techniques garments factories usually use to erase maximum shade bands. That is why the shade register should carry the roll number, dye lot, and inspection date, so the same shade does not get mixed later at the washing or packing stage.
How to Sort Garments by Shade
Since all the shades have been found in the blanket after quality people examination, it is a good practice to categorize the garments into groups A, B, C, D, etc. according to the buyer-approved shades of the blanket, and then wash them according to the shade level. A simple shade register should also note the roll number, dye lot, and inspection date so the same shade does not get mixed later at the washing or packing stage. Thus you can find sort out washing garments from the washing plant and no need to re-shed again. It saves manpower, money, and time as well as keeps factory goodwill. It also gives the finishing team a clear traceability record if the buyer later questions one carton against another.
But swing factories are not always willing to apply these shade band methods accurately. They are frequently negligence to make proper shade bands. But this is the most suitable system to erase hassle. In this way, the washing plant can quickly wash the garments separately according to the shade level, i.e. ABCD only.
What Is Eye Shade Sorting?
In this process, washing plant is going to separate all the garments visually according to the fabric shade band at the washing plant and washed by weight. This should be done in a controlled light box, because denim shade can look different under daylight, tube light, or warehouse lighting. It is an old trend and an ongoing process. If the garment is sent from the sewing floor without shade level to wash, then it will be so tough to separate. At that time there is no option other than Eye Shade. Even then, the result should be cross-checked against the last approved shade band so the visual sort does not drift away from the buyer approval. For best results, the same light source and a clean neutral background should be used every time.
But it must be remembered that no shade goes beyond buyer approval. Factory people should give emphasize buyer-approved shade bands to overcome this odd situation. Suppose, Bayer approved ABC three shades. A shade is slightly dark, B shade is medium and C shade is slightly lighter. What should we do in this situation? There is no option to violate buyer requirements. If the tech pack gives a ΔE or grey-scale limit, that tolerance should be followed first, because visual matching alone can be misleading in indigo and sulfur shades.
In such a situation we have to move ahead with B shade. So that the Bulk production is somewhat Light-Deep but it must be between A and C. If we wash the material with A or C shade then it will be seen at the end of the wash, our material has become 50% Dark or 50% Light. In such a situation, if the buyer does not comply, there will be no option but to rewash fifty percent of the garments. But if you ahead with B shade and wash it, even if the bulk material is slightly deep light, at least the approvals will be in between from the buyer end.
How to Keep One Carton One Shade
Washing plant usually tries to control the garment’s shading problem through several stages and processes. For example:-
1st Wash Stage:
Generally, if the garments are unwashed (Dry Process), after the Dry Process, the garments will be separated according to the shade of the fabric. Once garments are separated according to the approved shade band then those garments will be washed separately in separate machines. Even after 1st wash, there is some shade variation may found. In this situation, should collect problematic garments to do 2nd wash by doing 2nd Dry Process with PP. In the 1st Wash stage, de-sizing time is increased for shedding control, enzyme time and quantity are decreased and if bleach is present, bleaching time and quantity are tried to control shedding. A small pilot wash on one or two pieces is also useful before loading the full lot, especially when the recipe includes enzyme and bleach. Keep the liquor ratio, temperature, and load size the same for each shade lot, because even a small variation can shift the final tone after drying.
2nd Wash Stage
Garments need to separate again according to the shade band before going to start the second wash, and 2nd wash is done based on that shade. In most cases, this is the final wash. At this stage, the body is cleaned by neutralization, but if found Tint there, then tinting and softener are done simultaneously to accomplish the Final wash. Softener can slightly change the visual depth, so the final shade should be checked again before bulk drying and packing. Do not judge the final shade until the garments are fully dried and cooled, because wet denim always looks darker than the finished piece.
After physical checking, if some bleaching is required at the stage of second wash, then it is done. Factory people always try to control shade variation by tinting and softening properly. The decision should be based on the approved shade band, not on guesswork, because over-bleaching is harder to correct than a slightly dark shade. The final check should be done against the approved standard, not against the wet look in the machine.
Moreover, we should keep in mind that buyer never like mixed cartoons. All buyers want 1 carton 1 shade. To erase this problem garment Finishing Team need to be more careful and try to keep one shade material in one cartoon. That practice also makes carton traceability easier if a buyer raises a shade complaint later. That is why it is always logical to wash according to the buyer-approved shade band. A lot code on every carton helps the packing team keep the shades separated until dispatch.
Who Approves Shade in Garment Washing?
Various types of fabric defects may be created during the weaving of fabrics or may be created during dyeing, and finishing after weaving. In the context of the garment industry, there are still different rules in each factory or buying house. In some garments, merchandisers give wash approval, in some places wash technicians give wash approval. But in some factories QC manager or GM gives wash approval. Whoever factory concerned person who gives wash approval needs to maintain some basic requirements. They should have vast experience in washing before decision-making. For high-risk styles, the approval should ideally be signed by both merchandising and washing QA so one person does not carry the full risk. For example,
- Good understanding of the nature of fabric.
- Type of garments that are ladies or gents or kids.
- In which season will it be used?
- In which country will it be used?
- Should give priority upon lab tests report before garments wash.
The approval sample should be washed, dried, and inspected under the same light condition used for bulk checking. Many mills now add spectrophotometer readings and the lighting condition on the approval sheet, because the same denim can look different at the window and at the inspection table. It is important to have a clear understanding of garment wash. Those who will be decision-makers should have long experience in washing tracks. They should also know how to read the buyer tech pack, grey-scale standard, and ΔE limit.
Final Tips to Reduce Denim Shade Problems
Shade control policy is very important to ensure one shade in one Carton, especially for denim and Non-denim. It does also determine shade variation within one destination or PO. We should be keeping in mind that “fashion wear needs to be seen in the way they are used”. Similarly, human dresses should be viewed from the point of view of wearing. Their decision makes the wearer more fashionable, comfortable, nice fitting, good looking etc. Before giving washing garments approval someone has to be kept in mind for which purpose dresses will be used. Some are overly concerned with the shade of garments. If the buyer allows only a narrow tolerance, the wash plant should hold the lot and recheck the samples instead of rushing into rewash, because rewash can reduce hand feel and increase shade drift. If you don’t want to give a little 19/20 tolerance, then there is no option but to rewash the material. In current practice, that tolerance is usually written as a grey-scale or ΔE requirement in the tech pack, according to the buyer standard and ISO 105-A02. And rewash does not give very good results. Thus we should be more careful and cooperate to erase washing hassles. A tear risk should be checked against the cost of shade rejection, because not every off-shade lot is worth a harsh rewash.
One thing we should keep in mind during product purchasing customers first watch the design, then the fitting, then the out looking as well as hand feeling of the wash or the dry process. Then he decides whether he will buy blue jeans or gray or black or something else! Then shade variations become visible. Above all, washing plants should emphasize lab test reports to overcome unwanted problems. Because no garment will be shipped if the lab test becomes fails. If the garment found tearing problem by re-washing, it is better not to rewash the garment unless there is a major shade problem arises with the garment. This is why the Lab Tests must be OK first. A pre-wash lab dip or test wash is the safest place to confirm that the recipe is not damaging the fabric before bulk production starts. So Lab Test should be given highest priority. If you follow lab test report properly and discuss it with senior people before washing then you may solve washing shade problems quickly. The safest way to reduce denim shade problems is to sort early, approve under standard light, keep one carton one shade, and rewash only when the shade gap is outside buyer tolerance.
Frequently Asked Questions (FAQs)
Q1. How do you control shade variation in denim wash?
Ans: Sort the fabric into clear shade bands before washing, keep one shade per lot, and use the same approved recipe for the full lot. Visual approval should be checked against a buyer standard, and many mills also cross-check with a spectrophotometer.
Q2. What causes shade variation in denim garments?
Ans: The most common causes are different dye lots, uneven fabric preparation, inconsistent wash recipes, and mixed bundles at the sewing or washing stage. Lighting differences during visual sorting can also make the shade problem look worse than it really is.
Q3. What is shade sorting in garment washing?
Ans: Shade sorting is the process of grouping garments by shade before wash so each lot stays as close as possible to the approved color band. It is usually done by visual comparison under controlled light, and it works best when roll numbers and dye lots are recorded.
Q4. How do you keep one carton one shade in denim?
Ans: Keep the same shade lot together from washing to packing, and mark cartons clearly with lot or shade codes. Do not mix leftover pieces from different shades into the same carton, even if the color difference looks small.
Q5. Can rewash fix denim shade problems?
Ans: Rewash can sometimes correct a small shade issue, but it can also change hand feel, shrinkage, and fabric strength. If the shade difference is large or the buyer tolerance is strict, it is safer to hold the lot and get approval before reprocessing.
