pleasingness

In outward appearance she was not remarkable, though extremely pleasing, and it was a pleasingness that grew upon acquaintance.

From The Necromancers by Robert Hugh Benson

Consonance, however, is not identical with pleasingness, for different combinations are sometimes pleasing, sometimes displeasing.

From The Psychology of Beauty by Ethel Dench Puffer Howes

That such pleasingness would reside for her in any man astonished her. 

From The Game by Jack London

Some of them were pretty, and none had any defect in person, to take off from that general pleasingness which attends youth and innocence.

From A Description of Millenium Hall And the Country Adjacent Together with the Characters of the Inhabitants and Such Historical Anecdotes and Reflections As May Excite in the Reader Proper Sentiments of Humanity, and Lead the Mind to the Love of Virtue by Sarah Scott

It is 'the pleasingness of apparently equal differences.'

From Harvard Psychological Studies, Volume 1 Containing Sixteen Experimental Investigations from the Harvard Psychological Laboratory. by Hugo Münsterberg