Your Db Major Diatonic Guitar chord chart will be your last flat key in this series! If you have been following along with this series then you will recall that your major and minor keys share a key signature. This will also be the chords for Bb minor.
The key of Db will be all bar chords on the guitar. If you don’t know your bar chords and still want to play in the key of Db you can capo your guitar on the first fret and use the C Major Diatonic Guitar Chord Chart. When you capo on the first fret and play a C major chord shapes you are really playing a Db chord.