The hex color #3d2e3f is a dark color. The web-safe version is Hex
#333333. A complementary color is
#C2D1C0. The grayscale version is
#393939. A 20% lighter version of the original color is
#706172, and Hex
#0A000C is the 20% darker color. If the color is saturated by 10%, you get
#3D2D40. If the color is desaturated by 10%, the color
#3D2F3E is obtained.