The hex color #0003c1 is a dark color. The web-safe version is Hex
#0000CC. A complementary color is
#FFFC3E. The grayscale version is
#414141. A 20% lighter version of the original color is
#3336F4, and Hex
#00008E is the 20% darker color. If the color is saturated by 10%, you get
#0000CE. If the color is desaturated by 10%, the color
#0709B4 is obtained.