Untitled

Hue: The aspect of color determined by wavelength, e.g., red, green, or blue.

Brightness: The perceived intensity or luminance of a color.

Saturation: The purity or vividness of a color, ranging from dull (desaturated) to intense (fully saturated).

Subtractive Colour Mixture: Mixing pigments where colors are absorbed (subtracted), e.g., blue + yellow = green.

Additive Colour Mixture: Mixing light where colors are added together, e.g., red + green = yellow.

Pointillism: An artistic technique using small dots of color, relying on optical mixing by the viewer.

Trichromacy: Color vision based on three types of cone photoreceptors sensitive to short (S), medium (M), and long (L) wavelengths.

Young-Helmholtz Theory: The theory that trichromacy underlies human color vision, with three cone types for red, green, and blue.

L/M/S Cones: Photoreceptors in the retina sensitive to long (red), medium (green), and short (blue) wavelengths of light.

Complementary Colour: Colors opposite on the color wheel that cancel each other out to produce gray or white light.

Simultaneous Colour Contrast: The perception of a color being influenced by surrounding colors, enhancing contrasts.

Negative Colour Afterimage: A visual illusion where staring at one color produces its complementary color upon looking away.

Opponent-Process Theory: A theory of color vision proposing paired channels (red-green, blue-yellow, black-white) with mutual inhibition.

Forbidden Colour: Hypothetical colors (e.g., "reddish green") that the opponent-process mechanism prevents us from perceiving.

Colour Vision Deficiency: Impairments in perceiving colors due to abnormalities in cone photoreceptors.

Achromatopsia: Complete inability to perceive color, often caused by brain or retinal damage.

Dichromat: A person with only two functional types of cones, leading to limited color vision.

Protanope: A dichromat lacking red-sensitive (L) cones.

Deuteranope: A dichromat lacking green-sensitive (M) cones.

Tritanope: A dichromat lacking blue-sensitive (S) cones.

Anomalous Trichromat: A person with three cones, but one is abnormally sensitive, causing altered color perception.

Synaesthesia: A condition where stimulation in one sensory pathway (e.g., hearing) triggers involuntary experiences in another (e.g., color perception).