The hex color #2a291b is a dark color. The web-safe version is Hex
#333333. A complementary color is
#D5D6E4. The grayscale version is
#252525. A 20% lighter version of the original color is
#5D5C4E, and Hex
#000000 is the 20% darker color. If the color is saturated by 10%, you get
#2B291A. If the color is desaturated by 10%, the color
#29291C is obtained.