Cornflower

Yes, #5170d7 provides a solid 4.6:1 contrast ratio against standard black text, making it a safe choice for accessible typography. You can use it confidently for call-to-action buttons without worrying about losing readability or clarity.

This vibrant blue pairs naturally with neutral tones like charcoal or crisp white to maintain a professional, clean aesthetic. For a more sophisticated palette, try balancing it against softer greys to keep the interface from feeling too aggressive.