#658cbb hex color information In the additive RGB color model, color #658cbb (hexadecimal – hex triplet) has values of 101 (40% red), 140 (55% green) and 187 (73% blue). ... #658cbb isn't X11 color, closest X11 color is CadetBlue (#5f9ea0), also this color can be known as: Faded Blue.