The hex color #a50f18 is a dark color. The web-safe version is Hex
#990000. A complementary color is
#5AF0E7. The grayscale version is
#444444. A 20% lighter version of the original color is
#D8424B, and Hex
#720000 is the 20% darker color. If the color is saturated by 10%, you get
#AF0A14. If the color is desaturated by 10%, the color
#9B141C is obtained.