Color - Hue (Wavelength, type of color) (Shades of red, orange, yellow, green, blue, and purple)

Monet Femme Ombrelle 1886 Logo


A Hue is a color of the rainbow.

They can be highly simplified as being the color name that gives a particular wavelength (then without white, black or gray)

It is one of the main properties describing a color

The average person can distinguish about 150 colors (hues) of light.

Every one can be described using one or two of only 6 (7) colors :

  • Newton had used a prism to separate daylight and count seven individual colors (hue).
  • There are seven colors in the rainbow
  • Black, white and gray are achromatic (having no hue).

This colors as in the rainbow are defined as pure hue (ie without any admixture of other colors).

The human perception distinguishes between:

Technical definition (in the CIECAM02 model): the degree to which a stimulus can be described as similar to or different from stimuli that are described as the unique hues (red, green, blue, and yellow).


Different hues can be obtained by mixing two primaries, two adjacent colors or two complementary colours in equal or unequal proportions.

See Color - Chroma:

  • Chromatic: Having hue
  • Achromatic: Without hue
  • Polychromatic: Having many hues
  • Monochromatic: Having one hue only



Hue scale in the HSB/HSL encodings (representation) of RGB

Hue Scale 1)

Color Wheel

A color wheel is an abstract illustrative organization of color hues around a circle. Each angle corresponds to a hue.

The variation that you see regularly in color intensity between the center and the edge of the circle is due to a saturation variation (not to a hue one).

Hue Circle

HSV Cone

See also the hue saturation value cone.

Hsv Cone


A unique hue is defined as a color which an observer perceives as a pure, without any admixture of the other colors.

The unique hues are :

  • red,
  • green,
  • blue,
  • and yellow


See Color - Pure Hue (Pure Color)


To remove the hue of a color and get an achromatic color (greyscale color between white and black), you mix the color with its opponent color.

Documentation / Reference

Discover More
Monet Femme Ombrelle 1886 Logo

is a color with the following specificities: achromatic ie has no hue like white and gray ie does not come from the visible light spectrum ie shows the absence of light reflection the darkest...
Bootstrap - Why the primary color for an alert is not the same than for a button ?

This page explains why the primary color for an alert is not the same than for a button in Bootstrap and how to calculate the derived alert colors. huemonochromatic color scheme bootstrap uses a color...
Monet Femme Ombrelle 1886 Logo
CIELChab (a.k.a. LCh or HCL ) ColorSpace

CIELChab is a colorspace based on the following coordinates: L: lightness: in the range [0, 100] C is the Polar_coordinate_systempolar coordinates of chroma, relative saturation in [0, 230] H is...
Monet Femme Ombrelle 1886 Logo

A color is: a light wave in a range called the visual spectrum (that our eye see) the absence of light or mixed (achromatic colors (white, black, gray) in computer a data type that denotes a color....
Color - (Lightness|Value|Tone) (White, Gray, Black scale)

Lightness, also known as value or tone, is a property (coordinate) placed on a linear scale where: White is the highest possible value (the lightest) Black is the lowest value (the darkest) Gray...
Color Saturation
Color - (Saturation|Chroma|Intensity) (Purity of a hue)

The third descriptive quality of colour is saturation, also known as chroma or intensity. It defines the degree of purity of a hue. Saturation: is a (comparative|relative) property is linear and...
Subtractive Color Wheel
Color - (Wheel|Circle|Disc) (Hue Organization)

After Newton had used a prism to separate daylight and count seven individual colors (hue), it appeared to him that this was a closed system. By taking the violet end of the spectrum and linking it to...
Color Value Without Color
Color - Achromatic (Without hue)

achromatic colors are colors without hue: white black gray and all colors on the grayscale They does not come from the visible light spectrum. They shows: the totale absence of light reflection...
Color Blue
Color - Blue

blue is: a hue color (chromatic) a pure color (without additive) one of the percepted human colors. is used as primary color: coordinate in a colorspace (for instance the rgb colorspace) in...
Hsv Plotly
Color - (Parameters|Properties) Color Description

Colors are represented in a coordinate cartésien model known as a colorspace. Each colorspace has between 3 and 4 coordinates that are known as color channel (ie color property) A human colorspace...

Share this page:
Follow us:
Task Runner