Perhaps this is due to the association: the gentle color of the sky and the deep brown color of the earth. (howomen.com)
The mist, the gentle pastel colors of the sky, temples and trees just make this such a unique experience. (helloraya.com)
The green curtains, garden stool, and the blue wall color are cooler in tone, a more refined approach to earthy colors of sky blue and grass green. (bhg.com)