A very common question we get at ArtisanHD is whether we prefer sRGB vs Adobe RGB color profiles. You will get the best results if your photo or artwork has Adobe RGB 1998 as the color profile.
sRGB vs Adobe RGB Color
If you do not convert your image file to Adobe RGB 1998, we will convert it for you. However, be aware that the colors may turn out slightly different than they appear on your computer screen. We STRONGLY suggest looking at your artwork or photo converted to the proper file type before sending it to us. This is especially important for flesh tones, which are muted in SRGB.
For more information about our file preferences, read this FAQ.
If you'd like to read further, check out this blog post about Sizing Images for Print.