The hex color #b4b8b0 is a light color. The web-safe version is Hex
#CCCC99. A complementary color is
#4B474F. The grayscale version is
#B4B4B4. A 20% lighter version of the original color is
#E7EBE3, and Hex
#81857D is the 20% darker color. If the color is saturated by 10%, you get
#B4B8B0. If the color is desaturated by 10%, the color
#B4B8B0 is obtained.