best · sample · Opus 5.5 · trial 056 of 100

What the model said

Blue — specifically a deep teal-leaning blue. It's the most commonly named favorite across cultures, it's readable in both light and dark themes, and it's one of the few hues that stays distinguishable under most forms of color blindness.

That said, "best" depends on the job: green for "success" states, amber for warnings, and a good off-black for anything you have to read for hours.