CMYK Profiles for Print: FOGRA, GRACoL, and SWOP Explained
If a print shop has ever asked you to "convert to FOGRA39" or "supply files in GRACoL," this article is for you. CMYK profiles control how your digital colors translate to ink on paper, and using the wrong one means your print won't match your screen.
Why CMYK Profiles Exist
RGB (screens) and CMYK (print) represent color fundamentally differently. RGB is additive: light combines to create colors. CMYK is subtractive: inks absorb light to create colors. There's no direct mathematical conversion between them because the result depends on the actual inks, the paper, the press, and the printing conditions.
A CMYK ICC profile captures all of these variables. It tells the color management system: "when you put this much cyan, magenta, yellow, and black ink on this type of paper using this type of press, you get this specific color." Without a profile, the conversion from RGB to CMYK is a guess.
The Major CMYK Profiles
FOGRA (European Standard)
Published by the Fogra Graphic Technology Research Association in Germany. These are the standard profiles for European printing.
- FOGRA39 (ISO Coated v2): the most widely used. For offset printing on coated (glossy/matte) paper. If a European printer asks for "CMYK" without further detail, they almost certainly mean FOGRA39.
- FOGRA47 (ISO Uncoated): for offset printing on uncoated (rough/natural) paper. Colors are less vivid because the ink absorbs into the paper.
- FOGRA51 (PSO Coated v3): the newer replacement for FOGRA39, based on updated measurement data. Slowly gaining adoption but FOGRA39 remains dominant.
- FOGRA52 (PSO Uncoated v3): newer replacement for FOGRA47.
GRACoL (North American Standard)
Published by Idealliance, the US equivalent of Fogra. GRACoL stands for General Requirements for Applications in Commercial Offset Lithography.
- GRACoL 2006 (Coated #1): the standard for commercial offset printing on premium coated paper in North America. The US equivalent of FOGRA39.
- GRACoL 2013: updated characterization data, but the 2006 version remains widely used.
SWOP (US Web Offset)
- SWOP (CGATS TR 001): for web offset printing (high-speed rotary presses used for magazines, catalogs, and newspapers). "Web" here means a roll of paper, not the internet. Uses different ink and paper than sheetfed offset, so the color behavior is different.
Which Profile Should You Use?
| Situation | Profile |
|---|---|
| European print shop, coated paper | FOGRA39 (ISO Coated v2) |
| European print shop, uncoated paper | FOGRA47 (ISO Uncoated) |
| US/Canadian print shop, coated paper | GRACoL 2006 |
| US magazine or catalog printing | SWOP |
| Large format / inkjet printing | Ask your printer (they'll supply a custom profile) |
| Not sure | Ask your print shop |
The golden rule: always ask your print shop which profile they want. They've calibrated their presses to specific profiles, and supplying the wrong one means they have to convert, which introduces another step where colors can shift.
Total Ink Coverage (TAC)
Every CMYK profile has a total ink limit, the maximum combined percentage of C+M+Y+K that can be laid down at any point. For example:
- FOGRA39: 330% TAC
- GRACoL: 300% TAC
- Newspaper: often 240% or lower
Exceeding the TAC causes ink to pool, smear, or bleed through the paper. When you convert RGB to CMYK using the correct profile, the TAC is automatically respected.
Common Mistakes
- "I'll convert to CMYK in Photoshop using the default settings." Photoshop's default CMYK profile is US Web Coated (SWOP). If you're printing in Europe, this is wrong. Change it in Edit > Color Settings.
- "The colors changed when I converted to CMYK." Yes. CMYK has a smaller gamut than RGB. Vivid blues, bright greens, and saturated oranges shift the most. This is expected, not a bug. Use soft proofing to preview the CMYK result before finalizing.
- "I'll supply RGB and let the printer convert." This can work if the printer has a professional workflow, but you lose control over the conversion. If color accuracy matters, convert yourself with the correct profile and proof the result.
How to Check a File's CMYK Profile
You can inspect the ICC profile embedded in any image, including CMYK files, to verify the correct profile is assigned before sending to print.