Have you ever designed a beautiful logo on your screen, only to have it come back from the printer looking dull and muddy? You’ve likely fallen victim to the Color Profile Conflict. To fix this, you have to understand the fundamental difference between light and ink.
RGB: The World of Light
Your monitors, phones, and TVs use the RGB (Red, Green, Blue) color model. This is an "additive" process; when you combine all three, you get white light. RGB can produce incredibly vibrant, "neon" colors because it is backed by a glowing backlight. This is the only profile you should use for web-based images (JPEG, PNG, WebP).
CMYK: The World of Ink
Printers use CMYK (Cyan, Magenta, Yellow, and Key/Black). This is a "subtractive" process. Because ink doesn't emit light, it cannot replicate the brightness of a screen. This is why conversions are so important. Before you send a file to a printer, you must convert it to CMYK and adjust your brightness levels. Tools at easypixelshift.com help manage the file formats, but understanding the color theory behind them ensures your brand looks consistent from the screen to the street.