The hex color #a9023b is a dark color. The web-safe version is Hex
#990033. A complementary color is
#56FDC4. The grayscale version is
#4D4D4D. A 20% lighter version of the original color is
#DC356E, and Hex
#760008 is the 20% darker color. If the color is saturated by 10%, you get
#B20039. If the color is desaturated by 10%, the color
#A0093D is obtained.