The hex color #e6df1d is a light color. The web-safe version is Hex
#FFCC33. A complementary color is
#1920E2. The grayscale version is
#A1A1A1. A 20% lighter version of the original color is
#FFFF50, and Hex
#B3AC00 is the 20% darker color. If the color is saturated by 10%, you get
#EDE510. If the color is desaturated by 10%, the color
#DFD92A is obtained.