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I ignored the red/green toggle on my work dashboard for 6 months, then a coworker printed it in black and white
Our kitchen scheduling screen used red for late orders and green for on time, and I could not tell them apart on the monitor half the time. A new hire in Boise asked me why I kept mixing up tickets, so I printed the whole board in grayscale and suddenly the red and green looked identical. We added a small square icon next to each row, filled for late and empty for on time, and my mistakes dropped from about 4 a night to zero. Anyone else found that a plain pattern beats color every time on their own screens?
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simon_black6d ago
I used to be the guy who said color coding was all you needed, and for years I set up every status board at my warehouse with nothing but red, yellow, and green labels. Then we hired a guy named Dev who turned out to be colorblind, and he pulled me aside after a shift and told me he could not tell a single one of my "urgent" red tags from the finished green ones. That hit me hard because it was not just him, it was anyone glancing at a screen in bad light, plus me squinting at my phone in the parking lot after a long day. We switched to shapes, a triangle for late and a circle for done, and the errors on our pick line went from around six a week to almost nothing. I was wrong about color being enough, and the grayscale print test your new hire did is exactly how everyone should check their own setup before trusting it.
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