Cave and Light
To create this project and develop an idea I needed to understand what is it brightness exactly, so i did a research and found this explanation:
Brightness / (relative) Luminance:
"Brightness is an attribute of our perception which is mainly influenced by a color's lightness. This is probably why brightness and lightness are often mixed up. Brightness is not a color property, if used "correctly".
For one color of specific hue the perception of brightness is also more intense, if we increase saturation. A higher level of saturation makes a color look brighter.
In relation to other colors the brightness intensity of a color is also influenced by its hue. We can then speak of (relative) luminance to refer to brightness."
taken from: http://www.workwithcolor.com/color-properties-definitions-0101.htm
So with this in mind I took the idea to make visible the idea of "Lightness" that is more comprehensible, BUT what is Lightness, well here is a little explanation.
Lightness:
"Lightness is a color term commonly used by (digital / analog) imaging experts.
Lightness is usually one property of three when used to determine a certain color and measured as percentage value.
Lightness defines a range from dark (0%) to fully illuminated (100%). Any original hue has the average lightness level of 50%.
A painter might say lightness is the range from fully shaded to fully tinted.
You can lighten or darken a color by changing its lightness value."
taken from: http://www.workwithcolor.com/color-properties-definitions-0101.htm