The hex color #e3e133 is a light color. The web-safe version is Hex
#CCCC33. A complementary color is
#1C1ECC. The grayscale version is
#A8A8A8. A 20% lighter version of the original color is
#FFFF66, and Hex
#B0AE00 is the 20% darker color. If the color is saturated by 10%, you get
#E9E727. If the color is desaturated by 10%, the color
#DDDB3F is obtained.