The hex color #d23e4b is a dark color. The web-safe version is Hex
#CC3333. A complementary color is
#2DC1B4. The grayscale version is
#747474. A 20% lighter version of the original color is
#FF717E, and Hex
#9F0B18 is the 20% darker color. If the color is saturated by 10%, you get
#DB3947. If the color is desaturated by 10%, the color
#C9434F is obtained.