Color is a complex issure. Every color mode (RGB, CMYK, LAB) is comprised of a color spectrum. When you move from one color mode to another, the colors have to shift to fit into the new spectrum - which can create unexpected (and possibly unwanted) color shifts. For example: If you create a puple logo in RGB and send to Burco to convert the file to CMYK, when that color is moved into the CMYK color spectrum it may convert to a different shade - or a different color all together. This is why it is strongly recommended that you convert your files to CMYK - and recheck ALL YOUR COLORS - because you are the one that ultimately knows what colors the elements in your photos, logos and type need to be. All colors must be converted to CMYK for Burco to print.
LAB, Multichannel, Spot Colors and Duotones
Other color modes are generally not supported by CMYK printers, and Burco cannot be responsible for color shifts and problems with files that are not sent in the CMYK space.
Burco does NOT print in SPOT Colors (Custom Inks - ie flourescents & metalics).
Pantone (PMS) Colors
Use PMS Colors in the appropriate color mode - If you use PANTONE PROCESS COLORS, you should ALWAYS assign these colors in CMYK Mode. Again, if you assign these colors in RGB mode and then convert to CMYK the colors may shift. Please be aware that not all Pantone colors can be matched by CMYK printers.
Examples
Notice the color examples to the right. The bottom colors are in RGB spectrum. The top color is the VERY SAME COLOR in the CMYK spectrum. CMYK printing is a mixture of 4 inks - and sometimes it is impossible to mix a certain color with those 4 inks. It's always close - but it can be off just enough to upset the color balance.