I would like to see a Black and White of this. Those colors (Blue and orange) do not harmonize well together with blue as a majority. They are very stressful on the eyes, IMO.
Orange actually works well in a color harmony set, as long as there is a third color present to offset the harmony such as purple, yellow, or green. This type of color harmony would be known as a split-complimentary color harmony. However, with only two present colors... it doesn't exist.