The hex color #182B5D is a dark color. The web-safe version is Hex
#003366. A complementary color is
#E7D4A2. The grayscale version is
#353535. A 20% lighter version of the original color is
#4B5E90, and Hex
#00002A is the 20% darker color. If the color is saturated by 10%, you get
#152A61. If the color is desaturated by 10%, the color
#1B2C59 is obtained.