Something Weird Happened and I don't know how to undo it...

[larissam35961276]

SO i wanted to take a screen shot on photoshop CC 2019, but instead of pressing the right keys, I typed Command 3 which made my image black and white. I don't know how to undo it now. What do I press?

[Anna Lander · Accepted solution]

You just came in Blue Channel view (if your image is RGB). So open the Channels panel and choose the top line (RGB view).

[gener7]

Cmd 2  which is the shortcut for the RGB view if this happens again.   Cmd Shift 3 for the full screenshot.