Color or colour is the visual perception based on the electromagnetic spectrum. It is not an inherent property of matter, but rather related to an objects light absorption, reflection, emission spectra, and interference. For most humans, colors are perceived in the visible light spectrum with three types of cone cells. Other animals may have a different number of cone cell types or have eyes sensitive to different wavelengths. Colors have perceived properties such as hue, colorfulness (saturation), and luminance. Colors can also be additively mixed (commonly used for actual light) or subtractively mixed (commonly used for materials) .
Color is associated specifically with electromagnetic radiation of a certain range of wavelengths visible to the human eye. Radiation of such wavelengths constitutes that portion of the electromagnetic spectrum known as the visible spectrum, i.e., light. Vision is involved in the perception of color, and a person can see in dim light without being able to distinguish colors. Only when more light is present do colors appear. Light of some critical intensity is also necessary for color perception. The perception of color depends on vision, light, and the manner in which the brain responds to visual stimuli.
Color is defined as the aspect of things that is caused by differing qualities of light being reflected or emitted by them. Color has three properties: hue, value, and intensity. Hue is the name of a color, such as red, blue, or yellow. Value is the lightness or darkness of a hue (color) . The value of a hue can be changed by adding black or white. Intensity is the brightness or dullness of a hue (color) . Pure hues are high-intensity colors, while dull hues are low-intensity colors. A color wheel is the spectrum bent into a circle, which is a useful tool for organizing colors. The color wheel shows primary, secondary, complementary, and intermediate colors. There are three primary colors: red, blue, and yellow. Primary colors are hues that can be mixed to create all other colors. There are three secondary colors: green, orange, and violet. Secondary colors are the hues between the primary hues on the color wheel. The secondary hues are created by mixing two primary hues. To get orange, you mix equal parts of red and yellow. To get violet, you mix equal parts of red and blue. To get green, you mix equal parts of blue and yellow.
