The hex color #42508c is a dark color. The web-safe version is Hex
#336699. A complementary color is
#BDAF73. The grayscale version is
#5F5F5F. A 20% lighter version of the original color is
#7583BF, and Hex
#0F1D59 is the 20% darker color. If the color is saturated by 10%, you get
#3F4E90. If the color is desaturated by 10%, the color
#455288 is obtained.