you will find other nice sounding chords/triads, which remain associated with your home key of C major. Try moving your triad up the scale as a block chord, just using the white notes of C major.

Of course, not all triads have to be chords of C major or minor. You can use the process, of selecting the 1st (root), 3rd, and 5th degree of either a major or minor scale, to construct any triad, in ...