Frustrated with web color...

So, not quite sure why all of a sudden my pictures are showing up semi-desaturated once they go online. It's not rocket science, and I should be able to figure it out myself. But alas, I cannot... This Mini was a vibrant, rich red in real life, not brick burnt who-knows-what-shade-it-is red.  UPDATE! I figured out what I was doing wrong. I shoot in Adobe RGB mode, while most cameras are set for sRGB (some fotogs call it stupidRGB because of how it ends up in print). But I guess lately I was forgetting to make the Photoshop conversion to RGB so it shows up correctly on the web. Whew. I'm not crazy.