The hex color #002699 is a dark color. The web-safe version is Hex
#003399. A complementary color is
#FFD966. The grayscale version is
#404040. A 20% lighter version of the original color is
#3359CC, and Hex
#000066 is the 20% darker color. If the color is saturated by 10%, you get
#0023A2. If the color is desaturated by 10%, the color
#062990 is obtained.