The hex color #3e7b51 is a dark color. The web-safe version is Hex
#336666. A complementary color is
#C184AE. The grayscale version is
#595959. A 20% lighter version of the original color is
#71AE84, and Hex
#0B481E is the 20% darker color. If the color is saturated by 10%, you get
#3B7E50. If the color is desaturated by 10%, the color
#417852 is obtained.