The hex color #a20f15 is a dark color. The web-safe version is Hex
#990000. A complementary color is
#5DF0EA. The grayscale version is
#424242. A 20% lighter version of the original color is
#D54248, and Hex
#6F0000 is the 20% darker color. If the color is saturated by 10%, you get
#AC0A11. If the color is desaturated by 10%, the color
#98141A is obtained.