Washington Gas Light Co. stockholders complained yesterday that the company has few minority-group members in its management, and they criticized the company's affirmative action efforts.

Half a dozen black stockholders -- most of them Washington Gas employes -- charged that the utility has no black managers in many departments and has hired no new minority-group administrators in the last year.

Saying he is proud of affirmative action efforts Washington Gas Chairman Paul Reichardt said infrequent turnover among senior employes gives the company few opportunities to promote minority workers.

Reichardt fielded few other complaints during an hour and a half stockholders meeting at the Shoreham Hotel, but exchanged barbs repeatedly with corporate gadfly Evelyn Y. Davis.

A little more than 10 percent of Washington Gas' shareholders voted in favor of a resolution by Davis to prohibit the company from making contributions to charities. Davis said later that was the biggest vote ever cast for the resolution, which she has introduced at the meetings of dozens of companies.

Washington Gas investors re-elected the company's board of directors without opposition.

President Donald J. Heim told shareholders the company has sold excess insulation manufacturing capacity that was hurting the earnings of its Davenport Insulation Co., subsidiary. A natural gas exploration subsidiary also shows signs of improvement, he added.