Grayscale check vs eye-dropper tools, which one do you trust?

For years I just eyeballed contrast on my laptop screen, then a client in Chicago sent back a mockup saying the text was unreadable. I switched to running every palette through a grayscale filter first, takes about 20 seconds more per file. Grayscale catches luminance issues but misses hue tricks, like green text on red that flips in my head. Anyone else find the math-based tools more reliable than the visual filter, or am I overthinking it?

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troy_butler711d ago

My first freelance logo job back in 2018, I trusted my eyes too, then the client's printer showed me how bad the contrast really was. Now I do both, grayscale first to catch the obvious stuff, then the eyedropper tool on the two main colors just to double check the numbers. It's overkill most days but that one time it saved me from a full redo, so I keep doing it.