[ 2 syll. nat-su, na-tsu ] The baby girl name Natsu is also used as a boy name. It is pronounced as NAETSuw- â . Natsu has its origins in the Japanese language and it is also used largely in Japanese. The name Natsu means 'summer'.
Yellow is one of three primary colors, which means that it is one color only and cannot be made by mixing other colors. The shade of yellow may be lightened or darkened by adding additional colors, however. White can be added to yellow to make a paler shade, and adding orange or red will create a darker yellow.
The wavelengths of light determine the color. All  wavelengths are present in sunlight, so theâ¦re are infinite colors  in sunlight. We divide those into 7 categories, but most people can  see the difference in light of almost the same wavelength. The 7  colors are: red, orange, yellow, green, blue, and violet.