button · sample · Haiku 4.5 · trial 057 of 100

What the model said

I'd recommend **#007BFF** for a button. It's a professional, accessible blue that works well for primary actions and has good contrast against light and dark backgrounds. It's the standard button color in Bootstrap and many modern design systems.

If you want alternatives:
- **#28A745** for success/positive actions (green)
- **#DC3545** for destructive actions (red)
- **#0052B3** for a darker, more formal blue

What context is this button for? That might help refine the choice.