The hex color #c2180c is a dark color. The web-safe version is Hex
#CC0000. A complementary color is
#3DE7F3. The grayscale version is
#4D4D4D. A 20% lighter version of the original color is
#F54B3F, and Hex
#8F0000 is the 20% darker color. If the color is saturated by 10%, you get
#CE1306. If the color is desaturated by 10%, the color
#B61D12 is obtained.