<Extended Soft Rainbow>
1. Soft Red - 
                            
                            #FF6F61
                         - A gentle coral red that evokes warmth without being too intense.
2. Soft Orange - 
                            
                            #FF9F45
                         - A mellow orange with a hint of peach, providing a cheerful yet soft touch.
3. Soft Yellow - 
                            
                            #FFE68A
                         - A light pastel yellow that brings in brightness without overwhelming.
4. Soft Green - 
                            
                            #B2E1B7
                         - A calming mint green that offers a refreshing and serene vibe.
5. Soft Blue - 
                            
                            #A4C8E1
                         - A soft sky blue that promotes tranquility and relaxation.
6. Soft Purple - 
                            
                            #D7B2E1
                         - A delicate lavender that adds a soothing and whimsical element to the palette.
7. Soft Pink - 
                            
                            #FFB3C1
                         - A gentle pink that adds a soft, loving touch to the rainbow.
8. Soft Apricot - 
                            
                            #FFB84D
                         - A light apricot that brings a warm and cheerful energy.
9. Soft Lemon - 
                            
                            #E2D75D
                         - A muted lemon yellow that enhances brightness without harshness.
10. Soft Teal - 
                            
                            #A3D6D7
                         - A soft teal that introduces a refreshing and calming element.
11. Soft Turquoise - 
                            
                            #A4D8E1
                         - A gentle turquoise that evokes tranquility and serenity.
12. Soft Lavender - 
                            
                            #D6A3E0
                         - A soft lavender that provides a dreamy and whimsical feel.
13. Soft Indigo - 
                            
                            #B2A3D6
                         - A muted indigo that adds depth and richness without overpowering.
14. Soft Mint - 
                            
                            #C8E2D4
                         - A light mint that adds a refreshing touch to the palette.
15. Soft Rose - 
                            
                            #E1B7C5
                         - A muted rose that brings warmth and elegance to the overall design.

This extended soft rainbow palette includes varying hues that remain within the rainbow family while maintaining a gentle and inviting tone. The colors are balanced and can be used cohesively across various projects.

What specific contexts or projects do you have in mind for these additional hues? Are there any particular combinations or arrangements you would like to explore?