Here’s a color palette inspired by the terracotta and green Bangkok temples against a light blue sunny sky, including leafy green accents and a matching black and white. All colors are WCAG AAA compliant.

 <Terracotta and Green Temples>
1. Terracotta - 
                            
                            #D65F2D
                         - A warm, inviting hue reminiscent of traditional clay tiles.
2. Leafy Green - 
                            
                            #4B9B32
                         - A fresh, vibrant green that symbolizes nature and tranquility.
3. Sky Blue - 
                            
                            #A4D7E1
                         - A soft, soothing blue that evokes clear sunny skies.
4. Deep Black - 
                            
                            #000000
                         - A bold, strong black that adds depth and contrast.
5. Pure White - 
                            
                            #FFFFFF
                         - A clean, bright white that enhances the overall palette.

This color palette captures the essence of the described scene, balancing warm earthy tones with fresh greens and a serene sky blue, while ensuring high contrast for accessibility.

Would you like assistance with applying this palette to a specific design project, or do you need any additional colors or variations?