You may improve this section, discuss the issue on the talk page, or create a new section, as appropriate. The examples and perspective in this section may not represent a worldwide view of the subject. The complementary color of orange is azure. The color known as color wheel orange is the tone of orange that is a pure chroma on the HSV color wheel, the expression of which is known as the RGB color wheel, exactly halfway between red and yellow. Orange (color wheel) Orange (color wheel) A large selection of these various colors is shown below. Variations in value are also called tints and shades, a tint being an orange or other hue mixed with white, a shade being mixed with black. Varieties of the color orange may differ in hue, chroma (also called saturation, intensity, or colorfulness) or lightness (or value, tone, or brightness), or in two or three of these qualities. Orange pigments are largely in the ochre or cadmium families, and absorb mostly blue light. In the RGB color space it is a secondary color numerically halfway between gamma-compressed red and yellow, as can be seen in the RGB color wheel. In optics, orange has a wavelength between approximately 585 and 620 nm and a hue of 30° in HSV color space.

Orange secondary color