The hex color #0a0fdc is a dark color. The web-safe version is Hex
#0000CC. A complementary color is
#F5F023. The grayscale version is
#525252. A 20% lighter version of the original color is
#3D42FF, and Hex
#0000A9 is the 20% darker color. If the color is saturated by 10%, you get
#0308EA. If the color is desaturated by 10%, the color
#1116CE is obtained.