Color palette that creates a warm, nature-friendly atmosphere. Earth tones refer to a scheme of colors which represent the varied colors of ground, soil or natural minerals. As a group of colors, earth colors normally contain some brown, and can be used together to create a harmonious scheme. Many earth tones originate from clay earth pigments, such as umber, ochre, and sienna. Because earth tones are found in nature, they are extremely calming and grounding.