I love uncovering basic tricks I should’ve already known. This is a great one that will save me time almost every day.
Need to match a color from a web page or something else while working in Photoshop? Just click with the eyedropper tool somewhere in your Photoshop file, and drag the cursor off to sample colors from anything visible on your screen.
This eyedropper trick has apparently worked since Photoshop 7. Wish I’d known that a few years and a couple thousand screenshots ago!