Artist's commentary
Test
I've just uploaded to Pixiv after switching from Windows 7 to Windows 10, and the colors ended up looking faded. I looked into and tested a variety of things, and it seems to be a problem with either Google Chrome's specs or my monitor. (Apparently, RGB ends up converted to sRGB.) If it's Chrome, then it doesn't seem that there's anything I can do.
Actually, I checked it with Microsoft Edge, and I could see it without any fading. So my apologies, as colors will appear faded if you're browsing on Chrome at present, causing some inconvenience, but I appreciate your understanding. (I haven't confirmed either way on other browsers, so I don't know about them. 💦)