The hex color #b4c99b is a light color. The web-safe version is Hex
#CCCC99. A complementary color is
#4B3664. The grayscale version is
#B3B3B3. A 20% lighter version of the original color is
#E7FCCE, and Hex
#819668 is the 20% darker color. If the color is saturated by 10%, you get
#B4CB99. If the color is desaturated by 10%, the color
#B4C79D is obtained.