Color mood

The color mood is the color sensitivity of the visual organ, which is adapted to the color distribution in the field of vision .

Adaptation

The neutral state of adaptation of the eye is only achieved after two to five minutes, a maximum of ten minutes in the dark. Only then can a normal color stimulus function be determined under laboratory conditions .

The chromatic adaptation is important for the appearance of the colors and only enables color vision.

With colored lighting of the entire field of view, the colors appear strong and saturated . The natural colors retain their color impression even after a long stay in an environment with colored lighting. In the case of non-neutral lighting, there is a change in color : the colors become more unsaturated and shifted in the direction of the field of view illumination, colors in the area of ​​the opposing colors become more saturated.

If only parts of the field of vision are exposed to colored lighting, colored local adaptation occurs, i.e. local re-tuning.

Color change

→ Main article : Color perception

In contrast to color distortion, color change is a state of adaptation of the eye, a psychological effect. The eye adapts to the possibly colored general lighting of the field of vision. This effect is subordinate to the color stimulus . If the observer is in an environment with colored lighting, everything appears in the usual color again after a while . The key words here are persistence of the color equation and Johannes von Kries' theorem of coefficients . The Grassmann laws remain valid. The mood changes the color stimulus not : color consistency .

You can convince yourself of this in the strongly darkened, often red light of a night bar or in the change from neutral white fluorescent tube light to candlelight.

Color conversion

The color change is the change in the perception of color under the influence of a color change. This occurs when the type of light changes or when larger colored areas in the field of view are changed.

If the field of vision is not neutrally illuminated before or at the same time, or if the eye is still retuned, then color tones close to the type of illumination lose saturation and appear more similar to the illumination color , but the tones opposite to the illumination color gain in saturation; the color valences change.

application

These effects are used in the color vision examination on the anomaloscope . Here, the setting range of a color equation for yellow is neutralized and retuned after considering red and green.

source

• DIN 5340

See also

• Color temperature
• White point

The colors shown in this article are not binding and may appear different on different display devices.
One possibility to approximately calibrate the display with purely visual means is offered by the adjacent test image (only with native display resolution and when the page is not displayed zoomed):

Set the display device to sRGB mode, if available. If a letter (“R” for red, “G” for green or “B” for blue) appears strongly on one or more of the three gray areas, the gamma correction of the corresponding color channel should be corrected. sRGB corresponds to a gamma value of 2.2, which is the common value for TVs and computers with Windows or macOS (from version 10.6).