The hex color #50904c is a dark color. The web-safe version is Hex
#669933. A complementary color is
#AF6FB3. The grayscale version is
#646464. A 20% lighter version of the original color is
#83C37F, and Hex
#1D5D19 is the 20% darker color. If the color is saturated by 10%, you get
#4E944A. If the color is desaturated by 10%, the color
#528C4E is obtained.