The hex color #0003ca is a dark color. The web-safe version is Hex
#0000CC. A complementary color is
#FFFC35. The grayscale version is
#444444. A 20% lighter version of the original color is
#3336FD, and Hex
#000097 is the 20% darker color. If the color is saturated by 10%, you get
#0000D7. If the color is desaturated by 10%, the color
#070ABD is obtained.