The hex color #2e283e is a dark color. The web-safe version is Hex
#333333. A complementary color is
#D1D7C1. The grayscale version is
#313131. A 20% lighter version of the original color is
#615B71, and Hex
#00000B is the 20% darker color. If the color is saturated by 10%, you get
#2E273F. If the color is desaturated by 10%, the color
#2E293D is obtained.