Lightness vs. Darkness — What's the Difference?

Lightness is a visual perception of the luminance ( L ) {\displaystyle (L)} of an object. It is often judged relative to a similarly lit object.

Darkness, the polar opposite of brightness, is understood as a lack of illumination or an absence of visible light. Human vision is unable to distinguish color in conditions of either high brightness or very low brightness.

The quality or condition of being illuminated.

Lacking or having very little light

The dimension of the color of an object by which the object appears to reflect or transmit more or less of the incident light, varying from black to white for surface colors and from black to colorless for transparent volume colors.

Lacking brightness

The state or quality of having little weight or force.

Reflecting only a small fraction of incident light; tending toward black

Ease or quickness of movement; agility.

Served without milk or cream

Ease or cheerfulness in manner or style.

Being or having a complexion that is not light in color.

Freedom from worry or trouble.

Sullen or threatening

Lack of appropriate seriousness; levity.

Characterized by gloom or pessimism; dismal or bleak

Delicacy or subtlety in craft, performance, or effect.

Being or characterized by morbid or grimly satiric humor.

(uncountable) the condition of being illuminated

Unknown or concealed; mysterious

(uncountable) the relative whiteness or transparency of a colour

Lacking enlightenment, knowledge, or culture

(countable) The product of being illuminated.

Evil in nature or effect; sinister

The state of having little (or less) weight, or little force.

Morally corrupt; vicious

Agility of movement.

Having richness or depth

Freedom from worry.

Not giving performances; closed

Levity, frivolity; inconsistency.

(Linguistics) Pronounced with the back of the tongue raised toward the velum. Used of the sound (l) in words like full.

The state, condition, or quality, of being light or not heavy; buoyancy; levity; fickleness; nimbleness; delicacy; grace.

Absence of light.

Illumination, or degree of illumination; as, the lightness of a room.

A place having little or no light.

Absence of depth or of duskiness in color; as, the lightness of a tint; lightness of complexion.

Night; nightfall

The property of being comparatively small in weight;

A deep hue or color.

The gracefulness of a person or animal that is quick and nimble

Darks Pieces of laundry having a dark color.

Having a light color

(uncountable) The state of being dark; lack of light; the absolute or comparative absence of light.

The visual effect of illumination on objects or scenes as created in pictures;

(uncountable) The state or quality of reflecting little light, of tending to a blackish or brownish color.

(uncountable) Gloom; gloominess; depression.

(countable) The product of being dark.

(uncountable) Lack of understanding or compassion; spiritual or mental blindness.

(uncountable) Secrecy; concealment.

(uncountable) Lack of knowledge; obscurity or meaning or intelligibility; the unknown.

(uncountable) Hell.

The absence of light; blackness; obscurity; gloom.

A state of privacy; secrecy.

A state of ignorance or error, especially on moral or religious subjects; hence, wickedness; impurity.

Want of clearness or perspicuity; obscurity; as, the darkness of a subject, or of a discussion.

A state of distress or trouble.

Absence of light or illumination

An unilluminated area;

Absence of moral or spiritual values;

An unenlightened state;

Having a dark or somber color

A swarthy complexion