The hex color #a23a18 is a dark color. The web-safe version is Hex
#993300. A complementary color is
#5DC5E7. The grayscale version is
#515151. A 20% lighter version of the original color is
#D56D4B, and Hex
#6F0700 is the 20% darker color. If the color is saturated by 10%, you get
#AA3812. If the color is desaturated by 10%, the color
#9A3C1E is obtained.