The hex color #2d283c is a dark color. The web-safe version is Hex
#333333. A complementary color is
#D2D7C3. The grayscale version is
#303030. A 20% lighter version of the original color is
#605B6F, and Hex
#000009 is the 20% darker color. If the color is saturated by 10%, you get
#2D273D. If the color is desaturated by 10%, the color
#2D293B is obtained.