- Blue is a kind of color
- Dark means dark in color
- Therefore, dark blue is dark in color

- Dark blue is dark in color
- As lightness in color of an object increases , the ability of that object to reflect light will increase
- White is light in color
- So, white colored object will reflect more light than the dark blue object

- White colored object will reflect more light than the dark blue object
- There is a white t-shirt
- There is a dark blue t-shirt
- T-shirt is a kind of object
- Therefore, the white t-shirt will reflect more light than the dark blue t-shirt

- The white t-shirt will reflect more light than the dark blue t-shirt
- If an object reflects more sunlight, than the object is more likely to stay cool
- Therefore, the white t-shirt is likely to be cooler than dark blue t-shirt

Hence, the white t-shirt is likely to be cooler than dark blue t-shirt
[Question]Why is it better to wear a white T-shirt than a dark blue T-shirt in the summer?
[Context]- As lightness in color of an object increases , the ability of that object to reflect light will increase 
- Blue is a kind of color 
- There is a white t-shirt 
- If an object reflects more sunlight, than the object is more likely to stay cool 
- There is a dark blue t-shirt 
- T-shirt is a kind of object 
- White is light in color 
- Dark means dark in color