Does mustard and pink go together?

Mustard yellow and most intense pink look good together.

A very soft pastel pink would however be over powered by a mustard yellow.

If you are using the combination in clothing pieces, be sure to put the most flattering colour (to your skin tones) nearer your face.

If you are using this colour combination in decorating I would suggest bringing in a fair amount of a neutral colour to help balance out the look.