I often don’t like shooting landscapes that have just a blue sky because they are kind of boring. Unless there is a lot going on in the composition, having a lot of blue sky just doesn’t make for much of an interesting composition. Why is that? Landscapes are often a multitude of colors and there needs to be a balance of those colors, so when one is more dominant, whether dark or bright, it sticks out. Bright blue sky can be like that. There are times when having nothing but a blue sky works.
One great example of when nothing but blue works is with steam. Steam tends to blend in when there is a cloudy background. Makes sense right, white and grey steam blending in with grey clouds. This is where that whole color pallet with landscapes comes back into play. Landscapes aren’t just about majestic areas and great light, a lot comes back to color.