The hex color #1e2f3f is a dark color. The web-safe version is Hex
#333333. A complementary color is
#E1D0C0. The grayscale version is
#2F2F2F. A 20% lighter version of the original color is
#516272, and Hex
#00000C is the 20% darker color. If the color is saturated by 10%, you get
#1C2F41. If the color is desaturated by 10%, the color
#202F3D is obtained.