Here is a color palette based on your query for secondary shades of the colors 
          
          #44c5f6
        (Sky Blue), 
          
          #e53838
        (Crimson Red), and 
          
          #046cf1
        (Deep Sky Blue). The selected colors aim to convey a trustworthy, friendly, authoritative, yet approachable feel. 

### Color Palette

1. **Soft Sky Blue**
   - **Hex Code:** 
          
          #A3D8E9
       
   - **Description:** A lighter and softer version of Sky Blue that evokes calmness and trust, perfect for creating a friendly atmosphere.

2. **Coral Red**
   - **Hex Code:** 
          
          #FF6F61
       
   - **Description:** A warm and inviting shade that balances authority with approachability, making it excellent for engaging and welcoming designs.

3. **Light Ocean Blue**
   - **Hex Code:** 
          
          #78BFF8
       
   - **Description:** A friendly and refreshing shade that retains a sense of professionalism, ideal for backgrounds and accents.

4. **Warm Crimson**
   - **Hex Code:** 
          
          #E57C78
       
   - **Description:** A softer take on Crimson Red that adds warmth and approachability, suitable for calls to action or highlights.

5. **Cerulean Blue**
   - **Hex Code:** 
          
          #4AB8E1
       
   - **Description:** This vibrant blue shade is both authoritative and friendly, perfect for elements that need to stand out while still feeling approachable.

6. **Slate Gray**
   - **Hex Code:** 
          
          #7D9A9A
       
   - **Description:** A neutral, grounding color that adds sophistication and stability to the palette, enhancing the overall trustworthiness of the design.

### Summary
This palette blends cool blues and warm reds with neutral tones, creating a harmonious balance that feels both approachable and authoritative. The combination of these colors can be used effectively in branding, web design, and marketing materials to foster trust and friendliness while maintaining professionalism.