The hex color #0a09a0 is a dark color. The web-safe version is Hex
#000099. A complementary color is
#F5F65F. The grayscale version is
#3C3C3C. A 20% lighter version of the original color is
#3D3CD3, and Hex
#00006D is the 20% darker color. If the color is saturated by 10%, you get
#0504AA. If the color is desaturated by 10%, the color
#0F0E96 is obtained.