The hex color #13a91c is a dark color. The web-safe version is Hex
#009933. A complementary color is
#EC56E3. The grayscale version is
#484848. A 20% lighter version of the original color is
#46DC4F, and Hex
#007600 is the 20% darker color. If the color is saturated by 10%, you get
#0EB318. If the color is desaturated by 10%, the color
#189F20 is obtained.