The hex color #a80f17 is a dark color. The web-safe version is Hex
#990000. A complementary color is
#57F0E8. The grayscale version is
#454545. A 20% lighter version of the original color is
#DB424A, and Hex
#750000 is the 20% darker color. If the color is saturated by 10%, you get
#B20A12. If the color is desaturated by 10%, the color
#9E141C is obtained.