Why it works:
Enthusiasm: Orange’s vibrant nature injects a dose of excitement, making users feel motivated to take the next step. Big orange buttons are ideal for CTAs promoting new experiences or encouraging users to “Get Started” or “Join Us.”
Confidence: The confidence associated with orange subconsciously communicates that clicking your CTA is the right choice.
Friendliness: The warmth of orange creates a welcoming atmosphere, making users feel comfortable and less hesitant to engage with your CTA.
Examples of successful use:
The Farmer’s Dog’s “Start Today” call-to-action numéro allemand whatsapp button in orange isn’t just visually striking. It strategically uses the friendliness of orange, creating a warm and inviting atmosphere that encourages users to take the first step towards a new pet food experience.

which is a great complementary color on the green background.
Even retail giant Amazon understands the power of orange. They use orange for their “Buy Now” buttons, encouraging action in a confident yet friendly manner.
Samsung's cta color is also orange which has the most contrast on their white background.
5. Yellow
Bright, cheerful yellow is associated with optimism and warmth, making it a great choice for CTAs when you want to highlight key actions without overwhelming the user.
Psychological impact: Yellow exudes optimism, warmth, and sometimes caution.
Why it works: