Is a Pantone number enough to approve the color of custom packaging?
No. Identify the intended color reference, printing route, substrate and finish, then agree how the actual result will be assessed and accepted. A Pantone reference communicates a target; a CMYK conversion or a screen image does not automatically reproduce that target on every board. Define who may approve a practical alternative if the target cannot be achieved within the proposed route.
This guide concerns color acceptance rather than general file handoff. The artwork guide covers dielines, bleed and image resolution. A technically correct print file can still produce a color result that has not been approved.
When should I discuss spot color versus CMYK?
Ask the print provider how it proposes to reproduce the design. CMYK process printing combines process colors; a specified spot-color route uses a separately defined ink channel. The right choice depends on the artwork, available process, substrate, acceptable appearance and commercial scope. Do not assume that choosing spot ink alone removes material or finishing effects.
For a critical brand color, have the provider identify the proposed route and an appropriate physical reference before artwork release. If the design also contains photographs, clarify which elements use process colors and which use a spot channel. Keep the spot-color name and intended separation consistent in the supplied file; ask the provider to review it rather than silently converting everything.
ISO/TC 130's print-production guidance discusses printing conditions, characterization, proofing and viewing/measurement. Use these concepts to specify the actual workflow. A color value without its relevant condition is an incomplete approval instruction.
What reference should control the production decision?
Scroll horizontally to compare all columns.
| Reference | Useful purpose | Limit to record |
|---|---|---|
| Named physical brand/color reference | Communicate the desired appearance and reference edition/type | Not a guarantee that another substrate/process matches it |
| Contract proof for a defined print condition | Review represented process-color appearance within its declared scope | Not proof of every spot ink, foil, texture or box surface effect |
| Actual-stock print/finish sample | Assess the proposed material and represented production steps | Identify substitutions or steps that differ from production |
| Screen image or phone photo | Discuss layout or visible differences remotely | Not the sole acceptance reference for critical color |
Fogra's contract-proof guidance identifies a simulated printing condition and proof substrate under ISO 12647-7. An ordinary mockup or PDF should not be called a conforming contract proof merely because it looks convincing. Confirm which colors and effects the chosen reference can actually represent.
How should I compare color on a finished box?
Agree the reference, viewing conditions, sample surfaces and assessment method. Review the stock and finishing used in the proposed pack; a wrap, varnish or film can affect the observed result. If a numerical tolerance is required, specify the measurement system, conditions, relevant areas and decision method with the print provider. There is no single tolerance this guide can apply to every job.
Also decide what consistency means across components. A carton, paper sleeve and label may use different substrates and routes. Review the assembled set where their adjacency matters, and agree which reference controls each component. Requiring the same file values on all components is not the same as agreeing an acceptable visual relationship.
Hypothetical decision: a dark brand color changes after finishing
Assume a buyer likes an uncoated print sample, but the proposed finished version looks different under the agreed viewing conditions. This is an illustrative situation, not a client result or a quantified color shift. Record whether the difference comes from a changed stock, print route or represented finish; do not diagnose it from a phone photo alone.
Compare a revised finished reference, reconsider the finish or formally approve an achievable target on the chosen route. If a finish is removed to recover appearance or cost, review whether scuff resistance or other required behavior also changes. The authorized buyer must approve the resulting scope. Do not keep the earlier uncoated acceptance as unconditional approval of the finished pack.
What belongs in the color approval record?
- Artwork/dieline revisions and the specific colors or components being accepted.
- Reference identity and the agreed printing condition or proposed spot-color route.
- Material, coated side and represented finishing steps, including substitutions.
- Viewing/measurement and acceptance method, with any agreed tolerance clearly scoped.
- Approved result, outstanding issues, next permitted activity and production stop point.
- Approver/date and the conditions requiring another review on repeat orders.
Retain the controlling physical references and record how production comparisons will be made. If material or process changes, review its effect before reusing the approval. The sample approval guide explains version control; this color record should connect to that same baseline.
For a PACKRIVA enquiry, share the artwork status, critical colors, proposed material/finish and current reference. We help coordinate the development and sourcing questions; acceptance still needs a defined, project-specific review rather than a promise of a perfect match from a color code.