The hex color #3d273e is a dark color. The web-safe version is Hex
#333333. A complementary color is
#C2D8C1. The grayscale version is
#363636. A 20% lighter version of the original color is
#705A71, and Hex
#0A000B is the 20% darker color. If the color is saturated by 10%, you get
#3E263F. If the color is desaturated by 10%, the color
#3C293D is obtained.