The hex color #cf1738 is a dark color. The web-safe version is Hex
#CC0033. A complementary color is
#30E8C7. The grayscale version is
#5F5F5F. A 20% lighter version of the original color is
#FF4A6B, and Hex
#9C0005 is the 20% darker color. If the color is saturated by 10%, you get
#DA1034. If the color is desaturated by 10%, the color
#C41E3C is obtained.