Varieties of the color yellow may differ in hue, chroma (also called saturation, intensity, or colorfulness) or lightness (or value, tone, or brightness), or in two or three of these qualities.

The first recorded use of canary yellow as a color name in English was in 1789.

The NCS is based on the opponent process theory of vision.

The Munsell colors displayed are only approximate as they have been adjusted to fit into the sRGB gamut.

Displayed at right is the web color cream, a pale tint of yellow.

Lemon is a color somewhat resembling yellow and named after the fruit.

[citation needed] The first recorded use of lemon as a color name in English was in 1598.

The first recorded use of royal yellow as a color name in English was in 1548.

It is often used on hazard symbols, warning signs, guard rails, dangerous equipment, older American civil defense sirens (typically from the 1950s and 1960s), and some high-visibility clothing and personal protective equipment.

It is an inorganic pigment derived from the minerals celadonite and glauconite.

[21][22] A brownish yellow, common of the leather shoe with the same name.