The hex color #3da33d is a dark color. The web-safe version is Hex
#339933. A complementary color is
#C25CC2. The grayscale version is
#5F5F5F. A 20% lighter version of the original color is
#70D670, and Hex
#0A700A is the 20% darker color. If the color is saturated by 10%, you get
#3AAA3A. If the color is desaturated by 10%, the color
#409C40 is obtained.