Color Palette for Interior Walls of a House:

1. Ivory
   - Hex Code: 
                            
                            #FFFFF0
                        
   - Description: A warm and subtle off-white color that creates a soft and inviting atmosphere. Suitable for creating an elegant and timeless look.

2. Sky Blue
   - Hex Code: 
                            
                            #87CEEB
                        
   - Description: A calming and refreshing shade of blue that brings a sense of tranquility and serenity to the room. Perfect for bedrooms or spaces where relaxation is desired.

3. Pale Gray
   - Hex Code: 
                            
                            #DCDCDC
                        
   - Description: A light and sophisticated gray shade that adds a touch of modernity and elegance to any room. It complements various interior styles and works well as a neutral base color.

4. Mocha
   - Hex Code: 
                            
                            #AD8B64
                        
   - Description: A warm and earthy brown tone that provides a cozy and inviting ambiance. Works exceptionally well in living rooms or spaces where a cozy atmosphere is desired.

5. Sage Green
   - Hex Code: 
                            
                            #BCCEB2
                        
   - Description: A soft and muted green hue that brings a touch of nature indoors. It creates a soothing and relaxing environment, making it ideal for bedrooms or areas where tranquility is sought.

Note: These colors can be used individually or in combination to create a harmonious and cohesive look throughout the house.