In 1920, it was decided that the flag would consist of two equal stripes of green and yellow.

The order of the colors was reversed and the hue of the green stripe was changed.

[1] The current flag has a horizontal bicolour of yellow at the top and green at the bottom.

More plausibly, the green colour comes from the municipal coat of arms on which it is reflected in a grass field, on which a stork (The Hague's symbol) is depicted.

[1] The football club ADO Den Haag uses a rotated version of the flag in their logo.