Thank you for providing the base color #4E5BA6 . Based on this color, I will create a color palette that includes lighter and darker shades while maintaining similar perceived luminance.

Here’s the generated color palette:

 <Cool Blues>
1. Light Blue - 
                            
                            #A2B6E0
                         - A soft, airy shade that brings a sense of calm and tranquility.
2. Mid Blue - 
                            
                            #4E5BA6
                         - The original color, a robust blue that symbolizes stability and trust.
3. Dark Blue - 
                            
                            #2C3E73
                         - A deeper shade that conveys strength and professionalism.
4. Light Slate - 
                            
                            #BAC8D9
                         - A light, muted tone that offers a sophisticated contrast.
5. Deep Slate - 
                            
                            #1A2A4D
                         - An intense dark shade for depth and emphasis in your design.

This palette maintains a cool tone while providing variation in lightness, perfect for a design focused on professionalism or tranquility.

Would you like me to include specific use cases for this palette, or do you have any other colors in mind to incorporate?