The hex color #a41b05 is a dark color. The web-safe version is Hex
#993300. A complementary color is
#5BE4FA. The grayscale version is
#414141. A 20% lighter version of the original color is
#D74E38, and Hex
#710000 is the 20% darker color. If the color is saturated by 10%, you get
#AE1700. If the color is desaturated by 10%, the color
#9A1F0B is obtained.