The hex color #e3e339 is a light color. The web-safe version is Hex
#CCCC33. A complementary color is
#1C1CC6. The grayscale version is
#AAAAAA. A 20% lighter version of the original color is
#FFFF6C, and Hex
#B0B006 is the 20% darker color. If the color is saturated by 10%, you get
#E9E92E. If the color is desaturated by 10%, the color
#DDDD44 is obtained.