You can get dark blue from (plain) blue by adding (a small amount of) black.
No. Dark blue is a dark blue color, but navy blue is contrasted with white.
the addition of white. then the dark blue will become sky blue,which is a tint of dark blue.
dark blue
dark blue
dark blue
Navy blue or just dark blue.
Dark blue in German is "dunkelblau" - dunkel for dark and blau for blue. One word.
Dark blue and Dark red... or blue, red and black
Dark blue
Navy blue is a dark shade of blue somewhere between dark blue and black.
Mixing blue and black will make a very dark blue.