Tint, shade and tone

A tone is produced either by mixing a color with gray, or by both tinting and shading.

In the graphic arts, especially printmaking and drawing, "tone" has a different meaning, referring to areas of continuous color, produced by various means, as opposed to the linear marks made by an engraved or drawn line.

The Color Triangle depicting tint, shade, and tone was proposed in 1937 by Faber Birren.

Lightening a color by adding white can cause a shift towards blue[clarification needed] when mixed with reds and oranges (see Abney effect).

When lightening a color this hue shift can be corrected with the addition of a small amount of an adjacent color to bring the hue of the mixture back in line with the parent color (e.g. adding a small amount of orange to a mixture of red and white will correct the tendency of this mixture to shift slightly towards the blue end of the spectrum).

Some tints and shades of blue
An extension of the color wheel: the color sphere. Colors nearest the center or the poles are most achromatic . Colors of the same lightness and saturation, but of different hue, are called nuances . Colors of the same hue and saturation, but of different lightness, are called tints and shades . Colors of the same hue and lightness, but of different saturation, are called tones .