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Kappa Boötis is yet another very attractive binary with colour contrast, a yellow primary [kappa2 (4.5)] and deep blue companion [kappa1 (6.6)].
The companion is fixed at a position angle of 235º and separation 13.4". A truly wonderful sight.
Kappa is easily found by starting at the tip of the handle of the Big Dipper (eta UMa). With this star at the southwestern edge of your glasses, kappa is northeast: binoculars.
Iota Boötis is in the same field of view, southwest of kappa. Iota is an easy binocular double -- visual magnitudes 4.8 and 7.5, a position angle of 33º and separation of 38.5".
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