The hex color #4d77d0 is a dark color. The web-safe version is Hex
#6666CC. A complementary color is
#B2882F. The grayscale version is
#878787. A 20% lighter version of the original color is
#80AAFF, and Hex
#1A449D is the 20% darker color. If the color is saturated by 10%, you get
#4775D7. If the color is desaturated by 10%, the color
#5379C9 is obtained.