Accidently lost color from desktop display by using the keyboard

[CherylW51]

HP Envy Desktop with HP E243M monitor. I accidently hit two keys together and suddenly lost the color in my monitor. Everything shows normally but there is no color. It's like a black and white photo or movie. It makes it hard to see icons and buttons without color. The computer is working correctly with no recent changes except for that. Getting internet through fiberoptics cable directly to router and then cable to computer. It should be an easy fix since it was some keys I punched but I cannot get help in the HP Support Assistant, Virtual Assistant, Troubleshooting, Microsoft Display settings or anywhere I have looked. 

[WAWood · Accepted solution]

You accidentally stumbled across a Settings --> Accessibility feature to turn the colors off.

To change this, open Settings, enter Color Filters in the search box, scroll down the page to Keyboard shortcut for color filters -- which is probably ON.  Use that key combination to turn it Off.

[CherylW51]

Thank you so much. I finally figured it out before I got this answer. I discovered I had accidentally pressed the Windows logo + Ctrl + C when I was trying to copy something with one hand. 😆 Your solution is spot on. The only addition I would make is to make sure the button to change color filters is set to "off". That way this can never happen to you. I don't think that is a good design because it is so easy to accidently hit the Windows key so near Ctrl + C.
Under: chrome://settings/appearance
Under: Accessibility/Color Filters
Move button to "Off"