The hex color #2b83bb is a dark color. The web-safe version is Hex
#3399CC. A complementary color is
#D47C44. The grayscale version is
#787878. A 20% lighter version of the original color is
#5EB6EE, and Hex
#005088 is the 20% darker color. If the color is saturated by 10%, you get
#2384C2. If the color is desaturated by 10%, the color
#3382B4 is obtained.