[ 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.
Black and white can also not be made by mixing together other colors, but as they aren't used in color mixing to create colors, they get excluded from color mixing theory. If you add white to a color you lighten it and if you add black you darken it (though some painters don't use black at all, see.