The hex color #223ddc is a dark color. The web-safe version is Hex
#3333CC. A complementary color is
#DDC223. The grayscale version is
#696969. A 20% lighter version of the original color is
#5570FF, and Hex
#000AA9 is the 20% darker color. If the color is saturated by 10%, you get
#1B39E8. If the color is desaturated by 10%, the color
#2941D1 is obtained.