The hex color #e8f66f is a light color. The web-safe version is Hex
#FFFF66. A complementary color is
#170990. The grayscale version is
#C4C4C4. A 20% lighter version of the original color is
#FFFFA2, and Hex
#B5C33C is the 20% darker color. If the color is saturated by 10%, you get
#ECFB66. If the color is desaturated by 10%, the color
#E4F178 is obtained.