The hex color #366CD3 is a dark color. The web-safe version is Hex
#3366CC. A complementary color is
#C9932C. The grayscale version is
#7C7C7C. A 20% lighter version of the original color is
#699FFF, and Hex
#0339A0 is the 20% darker color. If the color is saturated by 10%, you get
#2F6ADC. If the color is desaturated by 10%, the color
#3D6ECA is obtained.