The hex color #231a1d is a dark color. The web-safe version is Hex
#333333. A complementary color is
#DCE5E2. The grayscale version is
#1E1E1E. A 20% lighter version of the original color is
#564D50, and Hex
#000000 is the 20% darker color. If the color is saturated by 10%, you get
#241A1D. If the color is desaturated by 10%, the color
#231A1D is obtained.