Out of all the colors my favorite one is blue.
That is interesting.  Your favorite color is one of the three primary colors, the other two being green and red.
That's true. Blue seems to be the color used as a calming color, sometimes used to show competence too, big companies used blue a lot, like Facebook.
Shades of green
Varieties of the color green may differ in hue, chroma (also called saturation or intensity) or lightness (or value, tone, or brightness), or in two or three of these qualities. Variations in value are also called tints and shades, a tint being a green or other hue mixed with white, a shade being mixed with black. A large selection of these various colors is shown below.
Green in biological nature.
Green is common in nature, especially in plants.
yellow from green, known as deuteranopia or redgreen color blindness. Green is restful to the eye. Studies show that a green environment can reduce fatigue.
In the subtractive color system, used in painting and color printing, green is created by a combination of yellow and blue, or yellow and cyan; in the RGB color model, used on television and computer screens, it is one of the additive primary colors, along with red and blue, which are mixed in different combinations to create all other colors. On