The hex color #4b4d8c is a dark color. The web-safe version is Hex
#336699. A complementary color is
#B4B273. The grayscale version is
#616161. A 20% lighter version of the original color is
#7E80BF, and Hex
#181A59 is the 20% darker color. If the color is saturated by 10%, you get
#494B90. If the color is desaturated by 10%, the color
#4D4F88 is obtained.