The hex color #3fc32b is a light color. The web-safe version is Hex
#33CC33. A complementary color is
#C03CD4. The grayscale version is
#646464. A 20% lighter version of the original color is
#72F65E, and Hex
#0C9000 is the 20% darker color. If the color is saturated by 10%, you get
#3BCC25. If the color is desaturated by 10%, the color
#43BA31 is obtained.