The hex color #683c2c is a dark color. The web-safe version is Hex
#663333. A complementary color is
#97C3D3. The grayscale version is
#454545. A 20% lighter version of the original color is
#9B6F5F, and Hex
#350900 is the 20% darker color. If the color is saturated by 10%, you get
#6B3B29. If the color is desaturated by 10%, the color
#653D2F is obtained.