This is the color yellow taught to children in elementary school. There are no other colors added to create a secondary or triary color. It's just an untainted, bright yellow.
Rarely does a painter need a true primary color. Most things in this world are not naturally the bright red, blue, and yellow of the primary colors. However, for those times when that true yellow is needed, this paint delivers. Use a little or a lot, the color will stay pure from the beginning of your painting to the end.
Use this acrylic paint right out of the tube if you want it to resemble oil paint. If you need a wash or a watercolor, thin this paint until the desired consistency is achieved. This fast drying paint will meet your need and expectation.
And as we always say, the true talent of art is the talent of blending colors to achieve the natural needed color. (It is what we stress in our art school, and Sharon is a master at!) This Yellow Light Hansa should be in your palette for blending with other colors.