The hex color #1b955f is a dark color. The web-safe version is Hex
#339966. A complementary color is
#E46AA0. The grayscale version is
#5A5A5A. A 20% lighter version of the original color is
#4EC892, and Hex
#00622C is the 20% darker color. If the color is saturated by 10%, you get
#159B5F. If the color is desaturated by 10%, the color
#218F5F is obtained.