Considering rebranding, What is missing in your promotions?or a new logo? Then definately ask for design based on golden ratio (also called the golden rectangle and golden mean) is a shape with a proportion of 1 to 1.618. More complexly, the math can be described like this as explained by the Interaction Design Foundation: Each number in the Fibonacci sequence is simply the sum of the two numbers before it.
So if you remove the left-hand square from the rectangle above, you’ll be left with another, smaller Golden Rectangle. This could continue infinitely. Similarly, adding a square equal to the length of the longest side of the rectangle gets you increasingly closer to a Golden Rectangle and the Golden Ratio.
Golden ratio has been considered to be used by architects and mathematician to construct one the most famous buildings and interiors.
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Basically, everything beautiful in the world uses curves created by the the golden ratio. From galaxies to flowers, everything has a sense of golden ratio to it!
Rose with Golden Ratio 
Your hand has it 
Apple Logo was created using it 
Monalisa’s face had it’s usage