The hex color #40858c is a dark color. The web-safe version is Hex
#339999. A complementary color is
#BF7A73. The grayscale version is
#707070. A 20% lighter version of the original color is
#73B8BF, and Hex
#0D5259 is the 20% darker color. If the color is saturated by 10%, you get
#3B878F. If the color is desaturated by 10%, the color
#458389 is obtained.