The hex color #e8f42c is a light color. The web-safe version is Hex
#FFFF33. A complementary color is
#170BD3. The grayscale version is
#ADADAD. A 20% lighter version of the original color is
#FFFF5F, and Hex
#B5C100 is the 20% darker color. If the color is saturated by 10%, you get
#EEFB1F. If the color is desaturated by 10%, the color
#E2ED39 is obtained.