The hex color #1f2e3f is a dark color. The web-safe version is Hex
#333333. A complementary color is
#E0D1C0. The grayscale version is
#2F2F2F. A 20% lighter version of the original color is
#526172, and Hex
#00000C is the 20% darker color. If the color is saturated by 10%, you get
#1D2E41. If the color is desaturated by 10%, the color
#212E3D is obtained.