The hex color #e8ef9f is a light color. The web-safe version is Hex
#FFFF99. A complementary color is
#171060. The grayscale version is
#D2D2D2. A 20% lighter version of the original color is
#FFFFD2, and Hex
#B5BC6C is the 20% darker color. If the color is saturated by 10%, you get
#EAF29A. If the color is desaturated by 10%, the color
#E6ECA4 is obtained.