The hex color #a0282d is a dark color. The web-safe version is Hex
#993333. A complementary color is
#5FD7D2. The grayscale version is
#525252. A 20% lighter version of the original color is
#D35B60, and Hex
#6D0000 is the 20% darker color. If the color is saturated by 10%, you get
#A82429. If the color is desaturated by 10%, the color
#982C31 is obtained.