Here’s an improved set of vibrant gradients that align with a cartoony aesthetic:

 <Enhanced Cartoon Gradients>
1. Gradient 1 - Electric Blue to Bright Fuchsia - 
                            
                            #3DA5E0
                         to 
                            
                            #FF3D6A
                         - A lively blending of electric blue transitioning to bright fuchsia, creating an energetic and playful effect.
2. Gradient 2 - Bright Fuchsia to Daffodil Yellow - 
                            
                            #FF3D6A
                         to 
                            
                            #FFEA00
                         - A vibrant gradient that moves smoothly from an energetic pink to a cheerful daffodil yellow, perfect for a happy, uplifting design.
3. Gradient 3 - Daffodil Yellow to Juicy Orange - 
                            
                            #FFEA00
                         to 
                            
                            #FF6F00
                         - A warm and inviting transition from bright yellow to a juicy orange, evoking feelings of fun and enthusiasm.
4. Gradient 4 - Juicy Orange to Fresh Lime - 
                            
                            #FF6F00
                         to 
                            
                            #A8E600
                         - A playful mix that flows from a bold orange to a zesty lime green, adding a refreshing and exciting twist.

These gradients maintain a vibrant and lively feel while enhancing the cartoony theme. Each gradient transitions smoothly between bright, fun colors, making them perfect for engaging UI elements.

Would you like to explore specific applications for these gradients, or do you have any other adjustments in mind?