The hex color #42213c is a dark color. The web-safe version is Hex
#333333. A complementary color is
#BDDEC3. The grayscale version is
#353535. A 20% lighter version of the original color is
#75546F, and Hex
#0F0009 is the 20% darker color. If the color is saturated by 10%, you get
#431F3D. If the color is desaturated by 10%, the color
#41233B is obtained.