The gamut gap between screen and print
RGB screens emit light; CMYK print absorbs it. The result is that screens can display a much wider range of saturated colors than offset or digital printing can reproduce. Vivid cyan, electric violet, and neon green look dramatically different when converted to CMYK — they lose saturation and appear flatter. Designers who build palettes entirely on screen without checking CMYK equivalents often receive proof prints that look nothing like what they approved on monitor. The safest approach is to verify your palette against CMYK gamut warnings in your color tool of choice before production, or to start with hues that are known to sit within the CMYK gamut: warm reds, warm oranges, most neutrals, and earth tones translate reliably.
