Here’s the updated pastel color palette with Light Coral replaced by Light Grey:

 <Calm Music Vibes> 
1. Light Blue - 
                            
                            #A4D7E1
                         - A soft, tranquil blue that evokes feelings of serenity and relaxation, reminiscent of clear skies and gentle waves.
2. Light Lavender - 
                            
                            #E1C6E1
                         - A soothing lavender that brings a sense of calmness and creativity, often associated with tranquility and reflection.
3. Light Green - 
                            
                            #B2E0B2
                         - A fresh, pastel green that symbolizes growth and harmony, invoking the peacefulness of nature.
4. Peach - 
                            
                            #F6C8B5
                         - A warm, soft peach that adds a gentle touch of vibrancy, complementing the cooler tones and enhancing the overall warmth of the palette.
5. Light Grey - 
                            
                            #D3D3D3
                         - A soft, neutral grey that provides balance and sophistication, grounding the palette while allowing the pastel colors to shine.

This revised palette maintains the calm and soothing vibes, now enhanced with a light grey that adds a touch of sophistication and balance. It works beautifully on a white background, making it suitable for your YouTube channel or banner.

Do you have any specific elements in mind for the banner design? Or would you like to explore any additional colors or styles?