Runs/button · sample · Haiku 4.5/066
button · sample · Haiku 4.5 · trial 066 of 100
the answer
#007bff
What the model said
I'd recommend **#007BFF** — a classic action blue that's highly recognizable, accessible with good contrast on white backgrounds, and works well for primary buttons. If you need something different, **#28A745** (green) works great for positive actions like "Submit" or "Save", or **#6C757D** (gray) for secondary buttons.