The hex color #52131c is a dark color. The web-safe version is Hex
#660033. A complementary color is
#ADECE3. The grayscale version is
#2B2B2B. A 20% lighter version of the original color is
#85464F, and Hex
#1F0000 is the 20% darker color. If the color is saturated by 10%, you get
#56111B. If the color is desaturated by 10%, the color
#4E151E is obtained.