Knitwear Color Approval: Lab Dips, Pantone & Bulk Color Matching

Color is one of the most common reasons a knitwear order disappoints a buyer — the bulk arrives a shade off the sample, or two colours that should match don't. Almost all of it is avoidable with a proper color-approval process. This guide walks through how knitwear color works in practice, from a Pantone reference to approved lab dips to consistent bulk, so your delivered sweaters match what you signed off.

Approve color on the actual yarn, under agreed lighting, in writing. A color approved casually on a phone screen is the number-one source of "the bulk looks wrong" disputes.

1. Reference — you provide a target: a Pantone TCX number, a physical swatch, or an existing garment. Pantone TCX (textile) references are more reliable for yarn than screen colors. 2. Lab dip — the factory dyes small yarn samples to match your reference and sends them for approval. 3. Approval (or revision) — you compare under agreed lighting and approve, or request a closer match. Expect one or two rounds. 4. Bulk dyeing — production yarn is dyed to the approved standard. 5. Bulk color check — confirm bulk matches the approved lab dip within tolerance.

• Lighting matters. Approve under an agreed light source (e.g. D65 daylight). Metamerism means a match under store light can fail under daylight — check under more than one.
• Dye-lots vary. Large orders may be dyed in multiple lots; specify an acceptable tolerance and that all lots match the approved standard.
• Yarn substrate affects shade. The same dye reads differently on wool vs cotton vs acrylic, so always approve on your actual yarn — see the yarn material guide.
• Color fastness. Ask about wash and rub fastness so the color holds; tie it into your care and labeling plan.

Don't treat color as an afterthought. Put the reference, approved lab dip and tolerance into your spec, and check color at inspection. This fits inside the broader sampling approval process and sweater quality control checklist. For multi-color jacquards and patterns, confirm every shade and the cross-matching between them — see jacquard vs intarsia knitwear.

• Approving color on a screen instead of dyed yarn
• Checking under only one light source
• Not specifying dye-lot tolerance on large orders
• Forgetting color fastness, so the garment fades or crocks
• Approving verbally with no written record

Licheng Knitwear runs lab-dip approval against your Pantone or physical reference, dyes bulk to the approved standard, and checks bulk color before shipment. Share your color targets and request a quote, or browse product directions to start from a style and palette you like.