The hex color #815e18 is a dark color. The web-safe version is Hex
#996600. A complementary color is
#7EA1E7. The grayscale version is
#525252. A 20% lighter version of the original color is
#B4914B, and Hex
#4E2B00 is the 20% darker color. If the color is saturated by 10%, you get
#865F12. If the color is desaturated by 10%, the color
#7C5D1E is obtained.