To add an outline color that complements the entire expanded palette, we can choose a color that provides a strong contrast while harmonizing with the various hues. Here’s the updated color palette with the outline color included:

 <Expanded Complementary Colors for Deep Red with Orange, Tongue Color, and Outline Color>
1. Deep Red - 
                            
                            #771102
                         - A bold and dark red that serves as the base color.
2. Bright Orange - 
                            
                            #FFA500
                         - A vibrant orange that complements the deep red with a warm and energetic contrast.
3. Soft Cream - 
                            
                            #F5E0C3
                         - A warm, light cream color that softens the palette and adds brightness.
4. Olive Green - 
                            
                            #4A5A2A
                         - A muted olive green that adds an earthy balance to the warmth of the reds and oranges.
5. Charcoal Gray - 
                            
                            #3B3B3B
                         - A dark charcoal gray that provides depth and contrast against the brighter hues.
6. Dusty Blue - 
                            
                            #4B6F8D
                         - A soft, muted blue that offers a cool contrast to the warm tones in the palette.
7. Warm Gold - 
                            
                            #D4A522
                         - A rich gold that enhances the luxurious feel of the palette and works well with both red and orange.
8. Coral Pink - 
                            
                            #FF6F61
                         - A warm coral that bridges the red and orange tones, adding a playful touch.
9. Teal - 
                            
                            #008080
                         - A deep teal that adds a refreshing contrast and balances the warmth of the palette.
10. Light Gray - 
                            
                            #D3D3D3
                         - A soft gray that can be used as a neutral backdrop to let the bolder colors stand out.
11. Lavender - 
                            
                            #E6E6FA
                         - A pale lavender that introduces a soft, calming element to the palette.
12. Rust - 
                            
                            #B7410E
                         - A rich, earthy tone that complements the deep red and adds a rustic feel.
13. Tongue Pink - 
                            
                            #D85E8B
                         - A bright, playful pink that adds a fun and slightly slimy look to the frog monster's tongue.
14. Outline Black - 
                            
                            #1C1C1C
                         - A deep black that provides a strong, bold outline that complements all hues while enhancing the overall design.

Description of the Outline Color:

• Outline Black ( #1C1C1C ): This deep black color creates a strong contrast against the vibrant and warm colors in the palette, ensuring that the shapes and forms stand out clearly. It helps add definition and structure to the design.

This comprehensive palette now includes an effective outline color that can be used to enhance the visual impact of your designs.

Would you like to explore specific applications for this palette in your project, or do you have any other elements you’d like to add or modify?