Sure! Here is a color palette for a fitness app:

 <Fitness App Color Palette>
1. Energy Red - 
                            
                            #FF1744
                         - Represents passion and intensity in workouts
2. Active Blue - 
                            
                            #2196F3
                         - Symbolizes motivation and focus during exercise
3. Fresh Green - 
                            
                            #4CAF50
                         - Evokes feelings of vitality and health
4. Strong Black - 
                            
                            #212121
                         - Provides a sleek and modern touch to the design
5. Vibrant Yellow - 
                            
                            #FFEB3B
                         - Adds a pop of color for positivity and optimism
6. Calm Gray - 
                            
                            #9E9E9E
                         - Balances the palette with a sense of stability and neutrality