The hex color #657DDB is a light color. The web-safe version is Hex
#6666CC. A complementary color is
#9A8224. The grayscale version is
#949494. A 20% lighter version of the original color is
#98B0FF, and Hex
#324AA8 is the 20% darker color. If the color is saturated by 10%, you get
#607BE2. If the color is desaturated by 10%, the color
#6A7FD4 is obtained.