The hex color #506f4c is a dark color. The web-safe version is Hex
#666633. A complementary color is
#AF90B3. The grayscale version is
#595959. A 20% lighter version of the original color is
#83A27F, and Hex
#1D3C19 is the 20% darker color. If the color is saturated by 10%, you get
#4F714B. If the color is desaturated by 10%, the color
#516D4D is obtained.