Runs/button · sample · Haiku 4.5/004
button · sample · Haiku 4.5 · trial 004 of 100
the answer
#007bff
What the model said
I'd recommend **#007BFF** (a clean, accessible blue) for a primary action button. It's widely recognizable, works well on most backgrounds, and has good contrast for text. If you need alternatives: **#28A745** for success/positive actions, **#DC3545** for destructive actions, or **#6C757D** for secondary/neutral buttons.