I'm using my Roku TV as the monitor for my PC. This colour crashes the TV!!
If I open Paint and create an almost black colour but with a little bit of blue in it (r=0, g=0, b=16, or #000010), and then paint the whole screen with that colour (paint window is maximized) then it totally crashes the Roku TV.
I can provide a video if it's helpful, but you can try it yourself, assuming it's not just my TV.
I discovered it in the Chrome browser when setting the background colour to a website to this value.