Blue is my favorite color.
Blue is a great color! There are so many different shades! What's your favorite shade of blue?
I am not sure, but blue is my favorite primary color.
I think a lot of shades of blue are a combination of blue and some other color. What do you think?
Sounds about right. Blue is between violet and green.
I also like the blue color of the sun and sea. I wonder if they're really blue or do we just perceive them that way?
 The eye perceives blue when observing light with a dominant wavelength between approximately 450 and 495 nanometres, crazy right?
That is crazy! Colors sure can be complex!
Yes and blue contains a slight mixture of other colors.