The hex color #c23e37 is a dark color. The web-safe version is Hex
#CC3333. A complementary color is
#3DC1C8. The grayscale version is
#686868. A 20% lighter version of the original color is
#F5716A, and Hex
#8F0B04 is the 20% darker color. If the color is saturated by 10%, you get
#CB3A32. If the color is desaturated by 10%, the color
#B9423C is obtained.