The hex color #d4f30a is a light color. The web-safe version is Hex
#CCFF00. A complementary color is
#2B0CF5. The grayscale version is
#9B9B9B. A 20% lighter version of the original color is
#FFFF3D, and Hex
#A1C000 is the 20% darker color. If the color is saturated by 10%, you get
#DAFC00. If the color is desaturated by 10%, the color
#CEEA19 is obtained.