The hex color #b4fb8a is a light color. The web-safe version is Hex
#CCFF99. A complementary color is
#4B0475. The grayscale version is
#BEBEBE. A 20% lighter version of the original color is
#E7FFBD, and Hex
#81C857 is the 20% darker color. If the color is saturated by 10%, you get
#B3FF85. If the color is desaturated by 10%, the color
#B5F58F is obtained.