The hex color #2a3e6f is a dark color. The web-safe version is Hex
#333366. A complementary color is
#D5C190. The grayscale version is
#484848. A 20% lighter version of the original color is
#5D71A2, and Hex
#000B3C is the 20% darker color. If the color is saturated by 10%, you get
#273D73. If the color is desaturated by 10%, the color
#2D3F6B is obtained.