From Pantone to Bulk Color: How Custom Activewear Color Matching Works

A brand may send a factory a Pantone number and expect the finished activewear to look exactly like the color card. In practice, that Pantone reference is only the beginning of the color-development process.

The same target color can look different when it moves from a cotton color standard onto nylon-spandex, polyester-spandex, rib knit, brushed fabric or a shiny performance surface. That is why bulk color approval should be built around the actual production-intent material, controlled color review and an agreed physical standard.

1. How Does Custom Activewear Color Matching Work?

The basic process sounds simple: choose a color, dye the fabric and make the garments.

The real workflow has more control points.

2. Pantone, Physical Swatch or Digital Color: Which Reference Should You Use?

Not every color reference has the same value in textile production.

For textile and apparel projects, Pantone TCX is usually more relevant than Pantone systems designed for hard surfaces.

However, a digital Pantone page on a computer or phone should not be treated as the final visual standard. Screen brightness, calibration and device settings can all change what the user sees.

3. Why Pantone TCX Does Not Guarantee an Identical Fabric Result

Pantone TCX provides a useful standardized target, but the finished garment may use a very different material from the Pantone cotton standard.

Activewear materials may include:

• Nylon-spandex jersey
• Polyester-spandex interlock
• Brushed yoga fabric
• Rib knit
• Seamless engineered knit
• Shiny performance fabric
• Matte compression fabric

Visual appearance can be influenced by:

• Fiber type
• Dye system
• Fabric construction
• Surface texture
• Brushing
• Gloss or matte finish
• Fabric density
• Finishing process

This distinction becomes especially important when a collection uses the same nominal color across several different fabrics.

A sports bra, legging, woven jacket and rib top may all use the same color name while still requiring separate color-development work.

4. What Is a Lab Dip?

A lab dip is a small dyed textile sample developed to show how a target color can be reproduced on a particular fabric or material.

Instead of approving a color only from a Pantone reference, the buyer can evaluate the color on a substrate that is much closer to the actual product.

A submission may include several options, for example:

The buyer may select the closest direction or request another correction.

Differences between submissions may involve:

• Lightness
• Darkness
• Red / green direction
• Yellow / blue direction
• Chroma or saturation
• Overall visual balance

5. How Should a Brand Review and Approve a Lab Dip?

A good approval process should be repeatable.

Avoid reviewing one submission in bright daylight and the next one under a warm office lamp without recording the difference.

Confirm the Correct Substrate

Before comparing the color, confirm that the lab dip is made on the agreed production-intent fabric or an approved equivalent.

Record:

• Fabric code
• Composition
• GSM
• Construction
• Finish
• Color reference
• Lab-dip revision

Compare Under Agreed Viewing Conditions

Evaluate the standard and submission together using the buyer's agreed color-review procedure.

AATCC EP9 provides a standardized framework for visually comparing the color difference between textile specimens and a standard.

Record the Decision

Avoid informal approval such as:

A more useful record is:

If the approved color is later revised, record the new revision rather than silently replacing the original standard.

6. Why Lighting Changes Color Evaluation

One of the most confusing situations for a buyer is when a fabric looks correct in one place and noticeably different somewhere else.

That does not automatically mean someone made a mistake.

Perceived color changes with the light source because different sources have different spectral characteristics.

Two samples may appear close under one condition and separate more clearly under another.

If the buyer has a specific light-box procedure or named illuminants in its quality manual, those requirements should be followed.

If no procedure exists, the buyer and supplier should agree on relevant viewing conditions before final color approval.

7. Visual Approval vs Instrumental Color Measurement

Color can be evaluated visually, instrumentally or by using both approaches together.

Visual Evaluation

A trained reviewer compares the sample directly with the physical standard under controlled conditions.

Visual review can capture things that numbers alone may not fully communicate, particularly when texture, gloss and fabric structure affect appearance.

Instrumental Evaluation

A spectrophotometer measures reflected color information from the textile and produces numerical color data.

AATCC EP6 provides procedures supporting instrumental measurement of textile color.

Instrumental measurement is particularly useful when:

• Multiple production lots must be compared
• The buyer has numerical color tolerances
• Repeat orders need consistent control
• Supplier and buyer need objective supporting data

8. What Does Delta E Mean?

Delta E is a numerical expression of color difference between two measured samples or between a sample and a standard.

The general idea is simple:

ISO 105-J03 provides a method for calculating color difference between two specimens of the same material measured under the same conditions using the CMC color-difference approach.

But there is a critical point for buyers:

The acceptable tolerance should reflect:

• Buyer requirements
• End use
• Color sensitivity
• Material
• Product category
• Measurement setup

If a customer requires a specific tolerance, record the exact formula, measurement conditions and pass criteria instead of simply writing:

without explaining which color-difference formula or measurement procedure is being used.

9. From Approved Lab Dip to Bulk Dyeing

Once the color is approved, the next challenge is scaling a small laboratory development into a production dye lot.

Bulk processing introduces additional variables such as:

• Larger material quantity
• Actual production machinery
• Fabric lot
• Dye-bath control
• Temperature and process control
• Finishing
• Heat setting
• Drying

That is why the approved lab dip should not simply disappear from the process after bulk production starts.

Representative bulk material should be compared against the agreed approval standard before the entire garment order proceeds.

10. What Is Dye-Lot Variation?

A dye lot is a batch of material processed together under a particular dyeing run.

When the same color is produced in separate dye lots, small shade differences may occur.

Potential contributors include:

• Raw material variation
• Fiber or yarn lot
• Dye-bath conditions
• Process variation
• Finishing
• Heat setting
• Fabric construction

This does not mean bulk production should accept uncontrolled color variation.

It means the buyer and manufacturer should define how production lots are evaluated and what happens when a lot falls outside the agreed tolerance.

Avoid Mixing Shade Lots Inside One Garment

Where visually relevant, components or panels used within the same garment should be managed carefully so obvious shade differences do not appear between adjacent areas.

This becomes particularly important for:

• Large solid-color panels
• Matching sports-bra and legging sets
• Waistbands
• Gussets
• Self-fabric trims
• Replacement production lots

11. Why the Same Color Can Look Different on Nylon and Polyester

Brands often want one collection color across several product categories.

For example:

Even if all products share the same color name or Pantone target, the surfaces may not look perfectly identical.

Differences can come from:

• Fiber chemistry
• Dye system
• Yarn shape
• Fabric structure
• Surface texture
• Brushing
• Gloss
• Light reflection

If cross-fabric color coordination is commercially important, develop and review the fabrics together rather than approving each one in isolation.

12. Color Matching and Colorfastness Are Not the Same Test

Another common mistake is to assume that an approved lab dip also proves the color will remain stable during wear and washing.

It does not.

The correct colorfastness tests should be chosen according to the product, buyer requirements and end use.

13. Common Activewear Color-Development Mistakes

14. What Should Be Recorded Before Bulk Production?

15. Pre-Bulk Color Approval Checklist

Frequently Asked Questions

Final Recommendation

Good color development starts with a clear reference, but it does not end with a Pantone number.

Confirm the actual fabric. Develop the color on that substrate. Review the physical lab dip under agreed conditions. Record the approved standard. Then compare bulk production against that approval instead of relying on memory, screenshots or informal comments.

If numerical color control is required, agree on the measurement method and tolerance before bulk production begins.

And when a collection uses different materials, review those materials together rather than assuming one Pantone target will appear visually identical on every surface.

That is a much more realistic—and much more useful—way to manage custom activewear color.

Technical References

1. Pantone Fashion, Home + Interiors — guidance on TCX for textiles and apparel and TPG for hard surfaces.
2. Pantone Cotton Swatch Card — physical Fashion, Home + Interiors TCX cotton color standard for apparel and textile development.
3. AATCC EP9-2025 — Evaluation Procedure for Visual Assessment of Color Difference of Textiles.
4. AATCC EP6-2021 — Evaluation Procedure for Instrumental Color Measurement.
5. ISO 105-J03:2009 — Textiles — Tests for colour fastness — Part J03: Calculation of colour differences. Confirmed current in 2025.