The hex color #521c04 is a dark color. The web-safe version is Hex
#663300. A complementary color is
#ADE3FB. The grayscale version is
#262626. A 20% lighter version of the original color is
#854F37, and Hex
#1F0000 is the 20% darker color. If the color is saturated by 10%, you get
#561B01. If the color is desaturated by 10%, the color
#4E1D07 is obtained.