The hex color #2a3b64 is a dark color. The web-safe version is Hex
#333366. A complementary color is
#D5C49B. The grayscale version is
#434343. A 20% lighter version of the original color is
#5D6E97, and Hex
#000831 is the 20% darker color. If the color is saturated by 10%, you get
#283A67. If the color is desaturated by 10%, the color
#2D3C61 is obtained.