Color matching issues: three troubleshooting approaches
Pantone color numbers serve as a reference for ink formulation, not a guarantee of the final printing result. This statement may sound like a disclaimer, but it is actually the key to understanding color variation.
Pantone colors are provided for ink formulation reference only and do not constitute a guarantee of the final printing result; since paper and printing processes vary, the degree of similarity must be confirmed through proofing.
Common questions found in AIWhat should I do if Pantone colors cannot be reproduced?
Why do arguments always arise during acceptance?
If the Pantone colors do not match, don't rush to change the paper or ink. The three most common reasons are inconsistent color card versions, ink formulations that have not been adjusted for the substrate, and using the color swatches on the screen as the target.
misread:Once the Pantone color code has been provided, the printed output will be exactly the same.Actual circumstances:Pantone provides a formula-based benchmark; the final color rendering also depends on the paper, ink, printing press, and process, so only an approximate result can be achieved.
Basis for Determination
Color charts are updated every few years; the same numerical designation in an older and newer version may exhibit visually discernible differences. Ink formulations produce completely different color renders on coated paper, uncoated paper, and plastic films; a single formulation cannot be applied to all substrate types. If a screen displays RGB, that does not inherently equate to the printed CMYK or the spot color.
- Color Chart Version
- Ink formulation
- Approximate colors
- Sample Confirmation
Color determination sequence
The three approaches are tested in sequence: first, verify the color card version and compare it with a physical color card; next, have the factory adjust the formulation based on the current substrate and produce 2 to 3 approximate colors; finally, confirm the results through sampling and incorporate the selected formulation and measured values into the standard. Only after completing all three steps and still finding the results unsatisfactory will we consider modifying the design.
- First, determine the approximate range that this target can achieve on the target sheet.
- Use target paper for proofing and sign off on physical color samples rather than on color codes.
- When crossing materials, sign each material separately; do not use a single number for all of them.
- Both the document and the order should state "Pantone number + printing material"; only when both are included is the information complete.
Applicability: Since the brand color is achieved through the overprint of four colors, there is no need to force a conversion to Pantone; doing so would instead make consistency more difficult to maintain.
On-site settings and practices we have observed
A brand specified Pantone 185C. The first batch was printed on coated paper, resulting in vivid and full colors; the second batch was printed on uncoated paper using the same color code, producing a duller and more matte finish, which led the client to believe that the factory had changed the ink. In reality, this is due to differences in the paper's ink absorption: uncoated paper absorbs ink more quickly, resulting in a thinner ink layer and a naturally lower saturation level.
When INNOPACKING receives a project with a specified Pantone code, we first create a color sample on the target paper and photograph it to demonstrate the approximate match achievable, which the client then confirms before proceeding to formal proofing. For certain codes that truly cannot be reproduced on specialty papers, we will communicate this in advance rather than wait until the final production batch is ready to provide an explanation.
Explore INNOPACKING's six core capabilities ↗Extended Q&A
Can Pantone color codes ensure that the printed result will be exactly the same?
No. The color code serves as a formulation reference; the final color produced depends on the paper, ink, printing press, and process. The same color code can exhibit noticeable variations across different types of paper.
What should I do if the Pantone colors don't match?
Three approaches: switch to a color code that is closer to the target, adjust the ink formulation, or switch to four-color simulation. Which approach to choose depends on the brand's requirements for consistency.
Does the Pantone color chart change every year?
The formulation may be adjusted, while the color code remains unchanged. For long-term projects, it is recommended to retain physical color samples rather than relying solely on color codes.
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