The hex color #ca381c is a dark color. The web-safe version is Hex
#CC3333. A complementary color is
#35C7E3. The grayscale version is
#5F5F5F. A 20% lighter version of the original color is
#FD6B4F, and Hex
#970500 is the 20% darker color. If the color is saturated by 10%, you get
#D53415. If the color is desaturated by 10%, the color
#BF3C23 is obtained.