Pantone® Ink Formulas Are a Starting Point—Not a Guarantee
Why two printers can mix the same Pantone formula and end up with different colors.
If you've ever mixed a Pantone® color exactly according to the Formula Guide and thought, "This doesn't look right," you're not alone.
At Blue Press Ink, we hear this question regularly. The good news is that you're probably not doing anything wrong.
The most important thing to understand is this:
Pantone formulas are intended as a starting point—not a guarantee that every printer, every ink manufacturer, or every press will produce an identical color.
The Formula Guide provides a standardized recipe to help printers communicate color. It is an incredibly valuable tool, but it cannot account for every variable involved in printing.
Every Ink Manufacturer's Base Colors Are Different
One of the biggest misconceptions is that all ink manufacturers' base colors are identical.
They aren't.
Even if two manufacturers both produce inks called Rubine Red, Reflex Blue, or Warm Red, those inks may differ in:
- Pigment selection
- Pigment strength
- Transparency
- Vehicle chemistry
- Gloss
- Flow characteristics
Those differences can cause the exact same published formula to produce noticeably different results.
That doesn't mean the formula is wrong—it simply means the formula was developed using a different ink system.
Paper Has a Huge Impact
Pantone publishes separate guides for coated and uncoated paper for a reason.
The same ink can appear:
- Brighter on coated stock
- Softer on uncoated stock
- Darker on absorbent papers
- More vibrant on smooth papers
Even changing paper brands can slightly influence the final appearance.
Ink Film Thickness Changes Color
Letterpress printers know that ink film thickness matters.
A slightly heavier ink film often appears:
- Darker
- Richer
- More saturated
A lighter film may appear:
- Less dense
- Slightly lighter
- Less vibrant
Two printers using the same ink formula on different presses can produce noticeably different colors simply because of differences in ink laydown.
Printing Conditions Matter
Several other variables influence the final result, including:
- Roller settings
- Ink distribution
- Printing pressure
- Drying characteristics
- Viewing light (daylight, LED, fluorescent, incandescent)
Even a color that looks perfect in one environment may appear different in another.
Professional Color Matching Goes Beyond the Formula
This is why experienced ink makers don't stop once the ingredients are weighed.
The printed drawdown is compared against the Pantone guide under proper lighting.
If necessary, small adjustments are made until the printed color visually matches the target.
Those adjustments are a normal part of professional color matching.
They're not a sign that anyone made a mistake.
So Why Publish Formulas?
Because they're extremely useful.
Pantone formulas provide a consistent starting point that allows printers around the world to speak the same color language.
Without them, every color match would begin from scratch.
But like any recipe, the final result depends on the ingredients, the equipment, and the process used to produce it.
At Blue Press Ink...
When we mix a custom PMS color, our goal isn't simply to reproduce the printed formula.
Our goal is to reproduce the printed color.
If a slight adjustment produces a closer visual match to the Pantone guide, we'll make that adjustment.
That's one advantage of having your ink professionally mixed—you receive a color matched to the target rather than simply a recipe.
The Bottom Line
Pantone formulas remain one of the most valuable tools in the printing industry.
But they should be viewed for what they are:
A carefully developed starting point—not an absolute guarantee.
Professional color matching has always combined science, experience, careful observation, and small adjustments.
That's how printers have achieved accurate color for decades.
Need a Custom Pantone Match?
Blue Press Ink specializes in small-batch custom PMS-matched letterpress inks, available in convenient 5 oz tubes, and larger sizes, so you can order exactly what you need without buying pounds of extra ink.
If you'd rather spend your time printing than chasing a color match, we'd be happy to mix it for you.