CMYK vs RGB vs Pantone: Which Color Mode to Use?

Key takeaways

Use RGB (sRGB) for screens and CMYK for print files.
Bright screen colors often fall outside the CMYK range and print duller.
Specify Pantone spot colors when one brand color must match everywhere.
Use 100% K for small text and a rich black for large dark areas.

The short answer

RGB is for screens. CMYK is for printing. Pantone is for exact, repeatable brand colors in print.

RGB (red, green, blue) makes color by adding light. Phones, monitors and TVs use it. Mixed at full strength, the three lights make white.
CMYK (cyan, magenta, yellow, black) makes color by layering inks on paper, which absorb (subtract) light. Most printed materials, including packaging, use it.
Pantone (PMS) is a library of pre-mixed spot inks. Each Pantone color is printed as one exact ink, not a mix of dots, so it matches across print runs and materials.

Quick answer: Design for web and social in RGB. Send print files, including packaging, in CMYK at 300 ppi. If one brand color must look identical on every box, every reorder and every material, specify it as a Pantone spot color too. Expect bright screen colors, especially neon greens, electric blues and vivid oranges, to look duller in CMYK.

Print can only reflect light the paper gives back, so neon greens, electric blues and bright oranges on screen fall outside what CMYK can hit.

RGB: additive color for screens

A screen pixel is made of tiny red, green and blue light sources. Varying their brightness creates millions of colors:

Red + green light = yellow
Green + blue = cyan
Blue + red = magenta
All three at full = white
None = black

Because RGB starts with black (a dark screen) and adds light, it's called additive color. Values usually run from 0 to 255 per channel, written like RGB 255, 87, 34, or as a hex code such as #FF5722.

RGB color spaces

"RGB" isn't one fixed set of colors. A color space defines exactly which red, green and blue are used:

sRGB: the standard for the web, most phones and most monitors. If you design for screens, use sRGB.
Display P3: a wider space used by many newer Apple and other devices; it shows more saturated reds and greens.
Adobe RGB (1998): a wider space popular with photographers, which includes more greens and cyans than sRGB.

CMYK: subtractive color for print

Printing starts with white paper, which reflects all light. Each ink absorbs some colors and reflects the rest:

Cyan absorbs red.
Magenta absorbs green.
Yellow absorbs blue.
Black (K, for "key") absorbs everything.

Layering inks subtracts more light, so CMYK is called subtractive color. In theory, full cyan, magenta and yellow make black; in practice they make a muddy dark brown, which is why printing adds a true black ink. Black also gives sharp text and saves the cost of piling up three colored inks.

CMYK values are written as percentages, such as C0 M80 Y95 K0 for a strong orange.

How CMYK printing creates color

Presses don't mix inks in a pot. They print tiny halftone dots of each ink in different sizes and angles. From normal viewing distance, your eye blends the dots into continuous color. Look at any printed box with a magnifier and you will see the dot pattern.

CMYK color standards

Like RGB, CMYK needs a profile that describes the press and paper:

GRACoL (General Requirements for Applications in Commercial Offset Lithography) is the common US reference for commercial printing on coated paper.
SWOP is a long-standing US reference for publication printing.
FOGRA profiles are common in Europe.

Ask your printer which profile they want. If they don't specify, a GRACoL-based profile is a sensible default for coated paperboard in the US.

Pantone: exact spot colors

The Pantone Matching System (PMS) is a numbered library of standard ink recipes. Pantone 186 C, for example, is a specific red. A printer mixes that ink to the recipe and prints it as a single solid color, not as CMYK dots.

Roughly 30–40% of Pantone colors can’t be reproduced exactly in CMYK, especially bright oranges, greens and blues.

Why brands use Pantone

Consistency: a spot ink matches far more reliably across print runs, presses and suppliers than a CMYK build.
Range: many Pantone colors, especially bright oranges, greens, blues and purples, are outside what CMYK can reproduce.
Special inks: Pantone includes metallics, fluorescents and pastels that CMYK can't make at all.
Clean solids: large areas of one color print smoother and more evenly as a spot ink.

The letters after a Pantone number

C (coated): how the ink looks on coated, smooth paper.
U (uncoated): how the same ink looks on uncoated paper, usually duller and darker.

The ink is the same; the paper changes how it looks. Always choose your Pantone from a printed guide for the paper you'll actually use, not from a screen.

Pantone costs

Each spot color is an extra ink on press. On offset and flexo printing, one or two Pantones are common and affordable on larger runs. On digital presses, Pantone colors are usually simulated with CMYK (sometimes with extra inks), so ask how close the match will be.

CMYK vs RGB vs Pantone compared

	RGB	CMYK	Pantone (spot)
How color is made	Adding light	Layering ink dots	One pre-mixed ink
Used for	Screens, web, social, video	Most printing	Brand colors, special inks
Color range (gamut)	Widest	Narrower	Includes colors CMYK can't hit
Consistency across printers	Varies by screen	Good with profiles	Best
Cost in print	Not used for print	Standard	Extra ink per color
Typical file values	0–255 or hex	0–100% each	Pantone name, e.g. 186 C

Why colors change from screen to print

Two reasons:

Gamut: the range of colors RGB screens can show is larger than what CMYK inks can print. Colors outside the CMYK gamut are mapped to the nearest printable color, which is usually duller.
Light vs reflection: screens glow; printed paper only reflects the light around it. Even a perfect match looks different under daylight, store LEDs or warm home lighting.

The most affected colors are neon and electric hues: bright RGB greens, blues, oranges and pinks. Deep, rich blues and purples can also shift. Earthy tones, skin tones and most neutrals convert well.

How to convert RGB to CMYK

Convert before you send files, so you can see and fix color shifts yourself rather than letting a printer's automatic conversion decide.

Adobe Photoshop

Edit → Convert to Profile.
Choose your printer's CMYK profile (for example a GRACoL coated profile).
Check strong colors and adjust with Curves or Hue/Saturation. View → Gamut Warning highlights colors that won't print accurately.

Adobe Illustrator

File → Document Color Mode → CMYK Color.
Recheck brand swatches and redefine them with your approved CMYK or Pantone values.

Adobe InDesign

Set swatches to CMYK or spot colors, then export a PDF/X-1a or PDF/X-4 with the destination profile your printer specifies.

Canva and other online tools

Many online design tools work in RGB. Some offer a print-ready PDF export with a CMYK option on paid plans. If yours doesn't, ask your printer whether they can convert files and send a proof.

Affinity Designer and Photo

Choose CMYK/8 as the document color format and assign the printer's profile under Document → Assign ICC Profile, or set CMYK when exporting to PDF.

Black in print: rich black vs 100% K

Small text and thin lines: use 100% black (C0 M0 Y0 K100) only. Mixing four inks in small text risks blurry, colored edges if the plates are slightly out of register.
Large black areas: use a rich black, such as C60 M40 Y40 K100, for a deeper, denser black. Plain 100% K looks dark gray on large areas.
Total ink limit: keep the total of all four values within your printer's limit, commonly around 300% on coated paper and lower on uncoated stock and corrugated. Too much ink smears, dries slowly and can crack on folds.
Never use "registration black" (100% of every ink) for artwork. It's meant for printer's marks only.

Color for packaging

Packaging has a few extra color considerations:

The material changes the color

White SBS board gives the brightest, most accurate CMYK.
Kraft board is brown, so inks look darker and warmer. Bright colors often need a white ink underlay.
Corrugated board is more absorbent and usually printed with flexo, which favors bold solids and Pantone colors over fine photo detail. Pre-printed (litho-laminated) liners give full photo quality on corrugated.
Metallized or foil board needs white ink wherever you don't want a metallic sheen.

Finishes change the color

Gloss coatings make colors deeper and more saturated. Matte and soft-touch laminations soften and slightly darken colors. Approve your proof with the finish you're ordering.

Matching across components

A brand color on a box, a sticker, a tissue paper and an insert card will be printed on different materials, often by different processes. Specifying a Pantone value for key colors, and asking each supplier to match it, is the best way to keep a set consistent.

PrintingOffset PrintingPlate-based CMYK and Pantone printing with the sharpest detail and the most accurate color.

PrintingDigital PrintingPlate-free full-color printing for short runs, variations and fast reorders.

PrintingFlexographic PrintingFast 1–3 color water-based printing on corrugated: the lowest cost for simple, high-volume designs.

GuidePrinting methods & colorOffset, digital and flexographic printing compared for packaging, plus CMYK vs Pantone, rich black, color matching, proofs and how to avoid color surprises.

Building a brand color system

A professional brand guideline lists each color in every system:

Use	Value to list	Example
Web and apps	HEX and RGB	#E8590C, RGB 232 89 12
Office and digital print	CMYK (coated)	C0 M75 Y100 K2
Packaging and signage	Pantone (C and U)	Pantone 1655 C / 1655 U
Uncoated print	CMYK (uncoated)	A separate, adjusted build
Paint and fabric	Paint or textile codes	Matched to a physical swatch

Don't simply convert one value to the others with software and call it done. Print the CMYK builds, compare them with a Pantone guide, and adjust until they look right on paper.

Getting color right: proofs and tolerances

Soft proof: a screen preview using the printer's profile. Useful, but monitors vary.
Digital (contract) proof: a calibrated inkjet print that simulates the press. Good for approving color.
Printed sample: a sample on the actual material and finish. The best check for packaging.
Press check: visiting the press during the run to approve the first sheets, for large or critical jobs.

Printers measure color differences with Delta E (ΔE), a number describing how different two colors look. A ΔE around 2 or less is hard for most people to notice side by side. Agree on a target and on which samples count as the standard for reorders. Printers that follow calibration methods such as G7 can hold more consistent gray balance and color between presses.

How each printing process handles color

Process	Color method	Strengths	Watch out for
Offset lithography	CMYK plus optional Pantone inks	Sharp detail, accurate color, cost-effective at volume	Plates and setup make short runs expensive
Digital (toner or inkjet)	CMYK, sometimes plus extra colors or white	No plates, ideal for short runs and versions	Pantones are simulated; metallics limited
Flexography	Pantone solids and CMYK	Fast, economical on corrugated, film and labels	Softer detail; dot gain can darken mid-tones
Rotogravure	CMYK and spot inks on engraved cylinders	Superb consistency on huge runs	Cylinder costs only make sense at very high volume
Screen printing	Spot inks, often thick and opaque	Vivid colors on unusual materials	Few colors per job; limited fine detail

For custom packaging, digital suits short runs and frequent design changes, offset suits paperboard cartons at volume and exact color, and flexo suits printed corrugated shipping boxes. Our packaging printing guide compares them in depth.

How to choose brand colors that print well

If you're creating a brand from scratch, a few choices make printing easier for years:

Pick colors in print first, then in RGB. Choose your key colors from a printed Pantone guide, then find their best CMYK and RGB equivalents. Going the other way, from a glowing screen color, often leads to a print color you can't match.
Check CMYK reproducibility. If a key color is far outside the CMYK gamut, plan to print it as a spot color, or choose a slightly less saturated shade that converts well.
Test on your real materials. A color that's perfect on white SBS may look muddy on kraft or corrugated. Print samples on every material you plan to use.
Keep the palette small. Two or three main colors are easier to control and cheaper to print as spot colors.
Include a neutral. A strong dark or a warm off-white gives text and backgrounds a stable base.

Common color mistakes in print files

Sending RGB files and expecting them to print exactly as seen on screen.
Using a different CMYK build for the same brand color across files. Save swatches and reuse them.
Converting Pantone spot colors to CMYK by accident when exporting PDFs, which cancels the spot ink.
Using rich black for small text, which can look blurry if registration shifts.
Exceeding the total ink limit in dark areas, causing smearing or slow drying.
Low-resolution images pulled from websites, which print soft and pixelated.
Judging color on an uncalibrated monitor, especially phone screens with boosted saturation.
Skipping the proof, which is the only reliable way to see printed color before production.

Color terms in plain English

Gamut: the range of colors a device or process can reproduce.
Color profile (ICC profile): a file describing how a device produces color, used to convert between systems accurately.
Spot color: a single pre-mixed ink, such as a Pantone color.
Process color: color built from CMYK dots.
Halftone: the dot pattern that creates tones in print.
Dot gain: dots printing slightly larger than intended, darkening tones.
Registration: how precisely the inks line up on each other.
Overprint: printing one ink on top of another instead of knocking out the color below.
Delta E (ΔE): a measure of how different two colors look.

Extended gamut printing

Some presses now print with CMYK plus orange, green and violet (CMYKOGV). These extra inks widen the gamut so that many Pantone colors can be simulated without mixing special inks, and several brands can be printed together on one press run. It's increasingly common in labels and flexible packaging. Ask your printer whether it suits your job.

Key terms on this page

CMYK: The four process ink colors (cyan, magenta, yellow and key/black) combined in small dots to reproduce full-color images in print.
Pantone (PMS): The Pantone Matching System, a standardized color reference used to specify exact spot colors.
Spot color: A pre-mixed ink printed as a solid color, often matched to a Pantone reference.
Paperboard: Thick paper (usually 0.010 inch or more) used for folding cartons, such as SBS, kraft and recycled board.
Flexographic printing (flexo): A printing method using flexible relief plates and fast-drying inks, common on corrugated boxes, labels and flexible packaging.
Proof: A preview of the final package (digital PDF, 3D render or physical sample) that the customer approves before production.
Rich black: Black printed with CMYK plus black ink for a deeper tone in large areas. Small text should use 100% black only.
Registration: The alignment of printed colors and finishes with each other and with the dieline.
Artwork: The final graphic files (logos, images, text and colors) placed on a dieline and used to make printing plates or digital print files.
SBS (solid bleached sulfate): Premium paperboard made from bleached virgin fiber, bright white throughout, with the best print and finish quality.
Board: A general term for thick paper materials used in packaging, including paperboard, corrugated board and greyboard.
Kraft: Paper or board made from unbleached wood pulp, naturally brown and strong.
Corrugated board: Board made of a fluted (wavy) paper medium glued between flat liners. It is strong, light and the main material for shipping boxes and mailers.
Finish: Any treatment applied after printing to change appearance or protect the surface, such as coatings, laminations, foil, embossing or spot UV.
Tissue paper: Thin, light paper used to wrap products inside boxes, often printed with a brand pattern.
Insert: A component inside a box that holds products in place, such as die-cut paperboard, corrugated, foam or molded pulp.
Offset printing: Lithographic printing that transfers ink from metal plates to a rubber blanket and then to the sheet. Sharp detail and consistent color for larger runs.
Digital printing: Printing directly from a digital file without plates. Ideal for short runs, multiple designs and fast changes.
Process color: A color printed using CMYK dots rather than a mixed spot ink.
Dot gain: The tendency of printed dots to spread on paper, making images darker than the digital file. Printers compensate for it in prepress.
Overprint: Printing one color on top of another without knocking out the color beneath.

More definitions in our packaging glossary.

Frequently asked questions

Should I use RGB or CMYK for print?

CMYK. Printers print with cyan, magenta, yellow and black inks, so print files should be supplied in CMYK, or with Pantone spot colors where specified.

Should I use RGB or CMYK for web and social media?

RGB, specifically sRGB. Screens display RGB, and CMYK files can look dull or shift color online.

Why do my colors look dull when printed?

Bright screen colors are often outside the CMYK range. When converted, they are mapped to the nearest printable color, which is less vivid. Uncoated and kraft materials make colors look duller still.

What is the difference between CMYK and Pantone?

CMYK builds colors from dots of four inks. Pantone uses a single pre-mixed ink for each color, giving more consistent and sometimes brighter results.

Is Pantone more expensive than CMYK?

On offset and flexo presses, each Pantone is an extra ink, which adds cost. On long runs, one or two spot colors can be cost-effective; on digital presses, Pantones are usually simulated with CMYK.

What is rich black?

A black built from 100% black plus some cyan, magenta and yellow, such as C60 M40 Y40 K100. It looks deeper than plain black on large areas. Don't use it for small text.

What does the C and U mean in Pantone colors?

C means coated paper and U means uncoated paper. They describe how the same ink looks on each surface.

Can I convert a HEX code to Pantone?

Software can suggest the closest Pantone, but always confirm with a printed Pantone guide on the paper you'll use. Screens can't show Pantone colors accurately.

What resolution should print images be?

300 ppi at the final printed size is standard for photos. Large signs viewed from a distance can be lower.

What file format should I send to a packaging printer?

A print-ready PDF (often PDF/X-1a or PDF/X-4) in CMYK, with Pantone colors named as spot swatches, fonts embedded or outlined, and bleed included, built on the supplier's dieline.

PrintingOffset PrintingPlate-based CMYK and Pantone printing with the sharpest detail and the most accurate color.

PrintingDigital PrintingPlate-free full-color printing for short runs, variations and fast reorders.

PrintingFlexographic PrintingFast 1–3 color water-based printing on corrugated: the lowest cost for simple, high-volume designs.

Finishes & Add-onsCoatings & LaminationsAqueous, UV and film laminations that protect print and set the look and feel.

CustomPacka Packaging Team

Our specialists write and review every guide based on day-to-day work specifying structures, materials, print and finishes for brands. Spotted something out of date? Tell us and we’ll fix it.

CMYK vs RGB vs Pantone: Color Modes Explained for Print and Packaging

The short answer