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I didn't forget about the visual part, don't wo
When we talk about the effectiveness of a CTA, we definitely have to take the aesthetic aspect into consideration .
In an old article of mine , I told you how UAE Phone Number important it was that every single element on the page had its own space, in order to adequately draw the attention of visitors.
This is also very true for Calls To Action.
So, don't pile too many elements around your buttons, give them some breathing room
In addition to this aspect, obviously the choice of images and colors can also have consequences.
It's important that all your actions are clearly visible and distinguishable from the rest of the elements so here are a couple of tips:

Use a color that contrasts with the rest of the site's tones.
Make the action stand out; choose a color complementary to those you have in the palette or define one that you will use only for the main actions. If you're wondering, there is no color that performs or works ten times better than others. For each site and offer, the impact can be different
Use arrows and images with people as much as possible.