01
Shade bands as numbers
Express an approved shade as a measured standard with a tolerance, so the dyehouse, the mill and the buyer are working from the same definition of acceptable.
Textiles & fibres
Color control for textiles, fibres & finished goods
Improve shade consistency across fabric, yarn and finished goods, quantify color under textile-standard lighting, and settle shade bands between dyehouse, mill and buyer with measured numbers.
Why shade drifts
Shade variation is built into a textile process.
Fibre lots, dye absorption, bath exhaustion, yarn twist and finishing all move the shade of a dye lot. Knitted and woven fabric presents that shade differently again, because a textured or pile surface scatters light depending on how the sample is folded and which way the grain runs. Visual shade matching catches the obvious misses, but it depends on the light in the room and the eye making the call. Measured color under controlled illumination turns the shade band into a specification.
02
UV-inclusive for brightened whites
Optical brightening agents only respond when UV is present in the light source, so a measurement without it reports a color that no customer ever sees.
03
Small apertures for yarn and trim
Switchable 8 mm and 4 mm apertures with camera-assisted positioning let you measure yarn packages, narrow trims and small swatches.
Instrument options
Portable and benchtop instruments for Textiles
Choose a portable instrument for production, incoming and on-site checks, or a benchtop instrument for controlled laboratory presentation and repeatable quality assurance. The SD-700 featured below is one relevant portable option—not the full range.
Production & fieldPortable Spectrophotometers →Laboratory & transmissionBenchtop Spectrophotometers →
Portable UV grating spectrophotometer
SD-700 UV Grating Spectrophotometer
US$5,000
d/8° geometry with switchable SCI/SCE, UV-inclusive 400–700 nm spectral measurement and camera-assisted positioning — built for shade band approval, dye lot release and incoming fabric checks.
- UV-inclusive illumination for whites and pastels containing optical brighteners
- Switchable 8 mm / 4 mm apertures for yarn, trims and small swatches
- SCI and SCE modes to separate dyed color from the surface texture of the fabric
- USB and Bluetooth with onboard storage for standards and dye lot records
Where it pays off
Use cases across the textile workflow
The same standard follows the shade from dyestuff intake to finished goods, so every team measures against the same target.
01
Dyehouse & lab dips
Approve lab dips against the reference standard, then release production dye lots on the same measured target.
02
Incoming fabric & yarn
Check delivered fabric and yarn against the approved shade band before it enters cutting or knitting.
03
Brightened whites & pastels
Measure whites and pale shades with the UV component included, so the reading matches the appearance under retail lighting.
04
Multi-site & supplier alignment
One instrument model across dyehouses, mills and suppliers means a standard approved in one place reads the same in another.
05
Cut-and-sew & garment matching
Keep panels, trims and accessories matched within a garment and between garments in the same order.
06
Shade sorting & fading checks
Sort rolls into shade groups objectively, and follow color change through laundering, light exposure and finishing tests.
Method notes
Decisions that make textile measurement repeatable
Sample presentation affects a textile reading more than it does a flat panel, so method discipline matters as much as the instrument.
| Decision | Common starting point | Why it matters |
|---|---|---|
| Sample preparation | Several layers to opacity, or a blackout backing | Thin or loose fabric transmits light, and the color behind the sample changes the reading unless the sample is made opaque. |
| Folding & grain | One agreed presentation per material | Folding, pile direction, nap and the woven grain all change how light leaves the surface, so the method has to be fixed and followed. |
| Illumination | UV included for whites and pastels | Optical brighteners are common in textiles, and a reading taken without UV reports a color the customer never sees. |
| Geometry | d/8° with SCI and SCE | SCI reads the dyed color with surface reflection excluded; SCE includes the texture and lustre the customer sees in the finished piece. |
| ΔE formula | Agreed between dyehouse, mill and buyer | The formula changes the number, so all three parties must be comparing the same calculation for a shade band to be enforceable. |
A note on viewing conditions
Instrumented measurement settles whether two samples differ and by how much. It does not replace visual assessment, because metamerism means two samples can measure as a match under one light source and look wrong under another. Most textile programmes do both: a measured shade band for pass/fail, plus a visual check against the standard light the finished goods will be seen in. If your programme depends on a specific illuminant, tell us and we will confirm the instrument settings to match.
Specifying with confidence
Textile color measurement FAQ
Why does the same fabric measure differently depending on how it is folded?
Light does not leave a textile surface evenly. Pile, nap, twist and the woven grain all scatter light in a preferred direction, so a sample folded one way can read as a different shade from the same sample folded another way. Knitted and textured fabrics show it most. The fix is not to eliminate the effect but to fix the method: one agreed presentation per material, followed by everyone who measures it.
How many layers of fabric should be measured?
Enough that the sample is opaque and the color behind it cannot influence the reading. Two layers are usually not sufficient for lightweight or loose fabric; four to eight layers, or a single layer over a blackout backing, is common. The right number depends on the fabric weight and construction, so confirm it once and write it into the method.
Does a spectrophotometer need UV for measuring white textiles?
If the material contains optical brightening agents, yes. Brighteners work by absorbing UV and re-emitting visible light, so a reading taken without the UV component reports a duller, redder color than the customer sees under daylight or retail lighting. UV-inclusive measurement is the practical default for whites and pastels, with UV excluded as a deliberate second mode when the effect of the brightener itself is being assessed.
What tolerance is realistic for a textile shade band?
It depends on the color, the fibre and the construction, and it is usually wider than the equivalent tolerance on flat paint or plastic. Light shades and textured surfaces carry more variation than dark, smooth ones. A defensible approach is to measure several production lots, see what the process actually produces, and set the shade band around that rather than picking a number in advance.
Related applications
Other surfaces and materials we cover
Make the shade band a spec, not an argument.
Tell us what you dye or buy — yarn, knitted fabric, woven goods or garments — and we will spec the geometry, aperture and illumination that suits your material.
Technical guides for Textiles
Measurement Techniques
Master Standards vs Working Standards in Color QC
The master standard is the protected source of color authority; working standards are verified copies used for routine production decisions.
Quick technical guide · Read the guide →Buying & Selection
How to Write a Color Specification for Suppliers
A supplier color specification should define the approved standard, measurement method, tolerance, sampling plan and actions for borderline or disputed results.
Quick technical guide · Read the guide →Fundamentals
Why Spectral Data Matters: More Than Just L*a*b*
Spectral data preserves how a sample interacts with each wavelength, enabling recalculation, metamerism analysis, color indices and deeper process diagnosis beyond one L*a*b* result.
Quick technical guide · Read the guide →Color Science
Whiteness Index Explained: How Whiteness Is Measured
A whiteness index converts measured color data into a single application-specific value for near-white materials, but the formula, illuminant, observer and UV condition must match.
Quick technical guide · Read the guide →Color Science
Yellowness Index Explained: What It Means and How It’s Measured
Yellowness index tracks a shift toward yellow in nominally clear, white or near-colorless materials under a specified formula and measurement condition.
Quick technical guide · Read the guide →Measurement Techniques
How to Create and Use Color Standards for Quality Control
A useful color standard combines an approved physical specimen, spectral target data, a defined measurement method and controlled storage and replacement rules.
Quick technical guide · Read the guide →Measurement Techniques
How Many Measurements Should You Take? Averaging and Repeatability Explained
Choose reading count from a documented sampling plan. Repeated readings, repositioned readings, locations and lots answer different questions.
Quick technical guide · Read the guide →Measurement Techniques
How Sample Preparation Affects Color Measurement
Sample preparation is part of the measurement method. Control the presentation, orientation, backing and condition that represent the approved product.
Quick technical guide · Read the guide →Buying & Selection
Portable vs Benchtop Spectrophotometers: Which Do You Need?
Portable and benchtop describe form factor, not automatic optical capability, accuracy or software functionality. Choose by the measurement method.
Quick technical guide · Read the guide →Delta E
How to Set Delta E Tolerances for Quality Control
A defensible ΔE tolerance is tied to a product, approved standard and defined measurement method—not a universal number.
Quick technical guide · Read the guide →Troubleshooting
Why Two Spectrophotometers Give Different Readings
When two instruments differ, align the sample, settings and optical conditions before deciding there is an instrument problem.
Quick technical guide · Read the guide →Aperture Size
Measurement Aperture Size Explained: Why It Matters
Aperture, illumination area and detector view are not always the same. Match the instrument’s usable measurement area to the sample and method.
Quick technical guide · Read the guide →