The hex color #2B5DD2 is a dark color. The web-safe version is Hex
#3366CC. A complementary color is
#D4A22D. The grayscale version is
#737373. A 20% lighter version of the original color is
#5E90FF, and Hex
#002A9F is the 20% darker color. If the color is saturated by 10%, you get
#245BDB. If the color is desaturated by 10%, the color
#325FC9 is obtained.