The hex color #3de66c is a light color. The web-safe version is Hex
#33FF66. A complementary color is
#C21993. The grayscale version is
#858585. A 20% lighter version of the original color is
#70FF9F, and Hex
#0AB339 is the 20% darker color. If the color is saturated by 10%, you get
#36F06A. If the color is desaturated by 10%, the color
#44DC6F is obtained.