The hex color #3b64ca is a dark color. The web-safe version is Hex
#3366CC. A complementary color is
#C49B35. The grayscale version is
#787878. A 20% lighter version of the original color is
#6E97FD, and Hex
#083197 is the 20% darker color. If the color is saturated by 10%, you get
#3562D2. If the color is desaturated by 10%, the color
#4166C2 is obtained.