The hex color #0000ce is a dark color. The web-safe version is Hex
#0000CC. A complementary color is
#FFFF31. The grayscale version is
#454545. A 20% lighter version of the original color is
#3333FF, and Hex
#00009B is the 20% darker color. If the color is saturated by 10%, you get
#0000DC. If the color is desaturated by 10%, the color
#0707C0 is obtained.