The hex color #0a2f7c is a dark color. The web-safe version is Hex
#003366. A complementary color is
#F5D083. The grayscale version is
#3C3C3C. A 20% lighter version of the original color is
#3D62AF, and Hex
#000049 is the 20% darker color. If the color is saturated by 10%, you get
#052E82. If the color is desaturated by 10%, the color
#0F3076 is obtained.