Urxvt bold colors are wrong – bold #0-7 are using colors from #8-15

If you are using console, not an X-server, the colour settings are not controlled by ~/.Xresources. For command-line and curses apps, it is the value of $TERM and the corresponding entries in termcap and terminfo which determine how colours are displayed.

Tmux may complicate things, I haven't tried it so can't advise. I would get things working right without it first.

Modify your ~/.profile with the following. You could also put this in your ~/.bashrc or ~/.bash_profile depending on what you already have and use. NOTE: this shows the default color setup. Change the first e to a B if you want to see red directories.

    LSCOLORS=exfxcxdxbxegedabagacad

    export LSCOLORS

    export CLICOLOR=1    

Save your ~/.profile and then do a:

    . .profile

From the command line.

Here are the different color settings and order of attributes from the ls man page:

LSCOLORS        The value of this variable describes what color to use for which attribute when colors are enabled with CLICOLOR.  This string is a
                 concatenation of pairs of the format fb, where f is the foreground color and b is the background color.

                 The color designators are as follows:

                       a     black
                       b     red
                       c     green
                       d     brown
                       e     blue
                       f     magenta
                       g     cyan
                       h     light grey
                       A     bold black, usually shows up as dark grey
                       B     bold red
                       C     bold green
                       D     bold brown, usually shows up as yellow
                       E     bold blue
                       F     bold magenta
                       G     bold cyan
                       H     bold light grey; looks like bright white
                       x     default foreground or background

                 Note that the above are standard ANSI colors.  The actual display may differ depending on the color capabilities of the terminal in
                 use.

                 The order of the attributes are as follows:

                       1.   directory
                       2.   symbolic link
                       3.   socket
                       4.   pipe
                       5.   executable
                       6.   block special
                       7.   character special
                       8.   executable with setuid bit set
                       9.   executable with setgid bit set
                       10.  directory writable to others, with sticky bit
                       11.  directory writable to others, without sticky bit

                 The default is "exfxcxdxbxegedabagacad", i.e. blue foreground and default background for regular directories, black foreground and red
                 background for setuid executables, etc.