What file format should I use for color accuracy in printing?

For the most accurate color, submit your files in CMYK, the color model presses actually print with. Files built in RGB are converted to CMYK for print, and that conversion can shift some colors, especially bright blues, greens, and oranges.

To keep color consistent:

• Design and export in CMYK from the start
• Match the CMYK values across reorders so pieces look the same batch to batch
• If colors differ between orders, confirm both files are truly CMYK and compare the values before reordering

When exact color matters, review the file in CMYK before you submit so what you see is closer to what prints.