Colors are one of the most amazing things that make life easier for humans. It aids in the recognition of items. Every object that we see have color. Colors helps us to easily interpret with World. But, colors are not the property of the objects. There is no such thing known as color in the real world. It's just the preception of energy and specific wavelengths of light that reaches the eye.

Step 1: Knowing What Is Light

First of all, Light is the electromagnetic radiation in the portion of visible electromagnetic spectrum, that is perceived by our eyes. Visible light consist of wavelengths of lights in the range of 400 nm- 700 nm.

Step 2: Understang How Color Works

Different colors are sensed by our eyes, with help of the different wavelength of electromagnetic radiation, that a object reflectes.The human eyes are only sensitive to light which lies between a small region of the electromagnetic spectrum. Once a wave is within the visible spectrum, we can see it.

Sunlight may seem as white to us. But, actually sunlight is the combination different colours (VIBGYOR).

Step 3: So, How Different Specific Colours Are Reflected by the Object?

So, when this beam of light falls on the surface of the object , the object absorbs most of the wavelengths and reflects some wavelength of light. The reflected wavelength of electromagnetic radiation determines the colour of the object. (For example, tomato reflects the red wavelength).

Step 4: Understanding How Our Eyes Play a Very Important Role in Distinguishing Color.

At the back of our eye, there is a tissue called the retina. Rodes and cones are located in Rectina. These cells are the eye’s lookouts. Their job is to spot light and let the brain know about it. Different rods and cones react to different wavelengths, or colors, of light. When the light reaches the rods and cones . They send electrical signals to brain. And, brain determines the colour. The human eye can distinguish something on the order of 7 to 10 million colors. The specific length of that wave that reaches our eyes determines the color we see. For example, 600nm is orange, 450 nm is blue and 550 nm is what we perceive as green.