No need a great description. a rainbow and some white light, over blue background.
What does your design show?
The light spectrum plus white color over dark blue background, in not homogeneous alternating lines.
What is the unique idea about your design?
The rainbow resulting from the refraction of light, and includes a line of white light. The background is dark. But in my opinion it have better contrast with blue color than pure black.
Is there a special story behind your design?
Not in this case.