The hex color #3bbb51 is a light color. The web-safe version is Hex
#33CC66. A complementary color is
#C444AE. The grayscale version is
#6D6D6D. A 20% lighter version of the original color is
#6EEE84, and Hex
#08881E is the 20% darker color. If the color is saturated by 10%, you get
#36C34E. If the color is desaturated by 10%, the color
#40B354 is obtained.