The hex color #2b516c is a dark color. The web-safe version is Hex
#336666. A complementary color is
#D4AE93. The grayscale version is
#4D4D4D. A 20% lighter version of the original color is
#5E849F, and Hex
#001E39 is the 20% darker color. If the color is saturated by 10%, you get
#28516F. If the color is desaturated by 10%, the color
#2E5169 is obtained.