The brightness of a color is called colorfulness, in the fashion and paint world. In the electronic world, and perhaps other disciplines, the brightness of a color is called saturation. In both instances, the brightness of a color is achieved through the removal of black, leaving only the pure color. Taken to the extreme, the brightest a color can be is often called fluorescent color.
Relative key, tint or shade, huge, intensity or saturation
intensity
The answer is "Color"
it depends on the brightness as in yellow it is very bright so it irritates your eyes, black a very dark color soothes the eyes, this is because bright colors reflect light into the eyes.
Loudness is to brightness as sound is to light.
the color of markab (most oftenly called pegasus) varys with the months and seasons. absolute brightness of the star appears to blue.
Relative key, tint or shade, huge, intensity or saturation
Their Color!(:
intensity
The measure of a star's brightness is its magnitude. A star's brightness as it appears from Earth is called its Apparent Magnitude.Star's brightness is measured by there magnitude.
color brightness
The brightness as seen from Earth is called the "apparent magnitude".The real brightness (defined as the apparent brightness, as seen from a standard distance) is called the "absolute magnitude".
its color :)
color
Their Color!(:
Intensity
its color