The hex color #e7f40a is a light color. The web-safe version is Hex
#FFFF00. A complementary color is
#180BF5. The grayscale version is
#A2A2A2. A 20% lighter version of the original color is
#FFFF3D, and Hex
#B4C100 is the 20% darker color. If the color is saturated by 10%, you get
#EEFC00. If the color is desaturated by 10%, the color
#E0EC19 is obtained.