Midnight blue
The name “midnight blue” was first used in 1915. It is named for its resemblance to the very dark blue shade of a night sky around the Moon. While the color name is relatively recent, midnight blue skies can be seen in Vincent van Gogh artworks from the 1800s like Starry Night. Crayola named a crayon “midnight blue” in 1958, replacing the shade that had previously been known as “Prussian blue”.