best · sample · Opus 5.5 · trial 048 of 100

What the model said

Blue — specifically a deep, slightly green-leaning blue like teal or cerulean. It's the most commonly named favorite color across cultures, it reads well on both light and dark backgrounds, and it's the color of clear skies and deep water, which is hard to beat.

That said, "best" depends on the job: red for urgency, green for "all good," and amber if you want a terminal that feels like 1983.