Made from lead chromate
Chrome yellow began as a paint pigment made of lead chromate. The French chemist Louis Nicolas Vauquelin found the element chromium while he was studying crocoite, a mineral made of lead chromate. Chemists then learned to make the compound in the early 1800s.
The oldest known painting with chrome yellow is by Sir Thomas Lawrence, from before 1810. The first recorded use of the name for a color in English came in 1818.
Van Gogh's sunflowers
Vincent van Gogh used chrome yellow in many paintings, including his Sunflowers series. Over time the pigment can darken and turn brown, and that change shows in some of his works. It also contains lead and a form of chromium that causes cancer, so its use is tightly controlled today. Many artists switched to cadmium yellow, which holds its color better.
The screen version
The code #FFA700 comes from ColorHexa, the source cited by the Wikipedia article on chrome yellow. It is a deep yellow that leans toward orange. Black text reads very well on it, at 10.78 to 1, while white text fails at 1.95 to 1.
For the yellow used on North American school buses, see school bus yellow. More options are on the shades of yellow page.

