Clickup popup design example
You can easily keep your popups on-brand by using your brand’s fonts and your logo, as Ramp does:
Ramp exit popups example
Even if you’re in the B2C world where you’re promoting other oman number details brands, you can pull elements from both brands, like Sephora does with this Gucci-related popup:

4. Use contrast to focus attention
Your popups must blend with your brand’s theme, yes. However, it’s also crucial that they stand out and catch the viewer’s eye.
If you have a lot of content (e.g. a bulleted list of things included in your offer), make sure that your value proposition is clear in the header copy.
Also, make sure the CTA color stands out from the rest of the popup, and that the button is large and legible. The headline and the CTA are usually the two most important elements of your popups, so make sure they have enough contrast.
Ecommerce Influence popup created with OptiMonk
For example, you could choose a bright, contrasting color for your CTA button. This will make it far more eye-catching and your visitors will be more likely to click it.
If your popup is primarily black, you could consider using orange or hot pink for your call to action button.