blueness
noun/ˈbluːnəs/
Etymology From blue + -ness.
1
Usually The quality or characteristic of being blue in color.
- In an atlas, too, the land is man's, and all coloured to show his claim to it — in vivid contrast to the universal independent blueness of the sea.1905, H. G. Wells, Empire of the Ants:
2
Usually Melancholy.