Color Converter
A color approved on screen is rarely the same color approved in print. That gap has existed for decades and continues to be responsible for a significant amount of rework in graphic design projects.
The reason is technical. Screens emit light; print absorbs it. What the eye sees in each case is the result of different physical processes, and no monitor replicates with absolute precision what will happen on paper or on plastic packaging.
RGB to CMYK conversion is where most projects waste time and money. A vibrant blue in RGB can turn into a dull blue in CMYK if the conversion uses the wrong profile. Saturated red in RGB frequently loses intensity in four-color printing. Lime green is one of the most problematic colors because it depends heavily on the final substrate.
Contrast checking is the other critical point. Text on a colored background needs to meet a minimum contrast ratio to be legible under varying light conditions. In packaging, this affects legal text, usage instructions, and any mandatory information.