Secondary colours

The governing concept is the visual relationship between warm and cool colours. In a traditional colour system, green is made by combining yellow, commonly perceived as warm, with blue, commonly perceived as cool. This mixture can create a balanced and harmonious impression, so option A is the best answer. Green is not made only from red, is not always the darkest colour, and is chromatic rather than achromatic.

The governing concept is the psychological effect of hue, value, and lighting. Violet generally appears more mysterious and deep when it is rendered in a dark value and viewed under limited light, because reduced brightness emphasizes depth and concealment. Thus option A is correct. A pale tint, strong yellow surroundings, or complete mixing with green would weaken or alter the violet effect rather than strengthen it.

The governing concept is the arrangement of secondary colours on the colour wheel. Orange is produced from red and yellow, so it lies between them; green, made from yellow and blue, lies between those colours; and violet, made from blue and red, lies between them. Therefore, option A correctly explains the positions. The other options are wrong because secondary colours do not share one position, lie outside the wheel, or simply sit beside their complements.

In subtractive paint or pigment mixing, the three secondary colours are orange, green, and violet. Together they contain the primary colour components red, yellow, and blue. Mixing them in approximately equal amounts absorbs light across much of the spectrum, so the result normally becomes a dull neutral brown or grey rather than a bright colour. Thus option B is correct; white belongs to additive light mixing, while pure yellow and blue ignore the full mixture.

A colour scheme is named according to the organised group of colours used in a composition. Orange, green, and violet are the three standard secondary colours, each formed by mixing two primary colours. When these colours provide the main palette, the composition may be called a secondary colour scheme, so option B is correct. It is not primary because the palette does not consist of red, yellow, and blue, and it is not monochromatic because three different hues are used.

The governing concept is the complementary relationship between a primary and the secondary colour made from the other two primaries. Green is formed from yellow and blue; red is the remaining primary and appears opposite green on the colour wheel. This opposition creates strong contrast. The colours are not identical, they are not both simply warm, and equal value is not what defines complementarity. Hence, option B is correct.

The governing concept is visual hierarchy in a colour scheme. A colour becomes dominant when it occupies more area, has greater intensity, or receives stronger contrast, so the eye notices it first. Equal area and intensity make the colours compete more equally, while removing the other colours is unnecessary and reduces variety. Merely changing an outline is usually weaker. Therefore, option B is the best answer.

The governing concept is colour variation in painting. Natural objects do not reflect light uniformly: leaves and distant forms can show light green, dark green, yellow-green and blue-green variations. These changes in hue, value and intensity help suggest volume, light direction and distance. Option A is correct because one flat green removes those visual cues. The other choices are unrelated or factually incorrect explanations for a flat-looking scene.

The governing concept is complementary-colour contamination in pigment mixing. Red and yellow combine to make orange, while blue is complementary to orange; even a small amount of blue can neutralise the mixture and make it dull or brownish. Therefore, the red and yellow pigments should be free from blue contamination, making option A correct. White or black can change lightness or darkness, and green is not the key complementary contaminant identified in this mixture.

The governing concept is value modification: a tint is produced by adding white to a hue. Thus, green plus white becomes a lighter version of green, so its value increases while its hue family and secondary-colour identity remain. It does not become a primary colour, acquire extra red, or automatically receive a different complement. A shade, in contrast, is made by adding black and becomes darker.

The governing concept is the colour wheel as a visual map of colour relationships. Each secondary colour is made by mixing two neighbouring primaries: orange lies between red and yellow, green between yellow and blue, and violet between blue and red. Their placement therefore communicates the source relationship. Option A is correct; value, temperature, and complementarity are separate properties and do not explain the positions.

The governing concept is additive colour mixing. In the RGB light system, red and green are treated as primary light components; when their intensities combine, the eye perceives yellow light. Therefore yellow is secondary in that system. Blue and green light produce cyan, absence of light produces black, and a yellow pigment belongs to a subtractive material system rather than explaining yellow as a secondary light colour.

The governing concept is additive RGB colour mixing. Green and blue are primary light components, and when their emitted light combines, the visual system perceives cyan. That makes cyan a secondary colour in the light system. Red plus green produces yellow, while black represents absence of emitted light. The options about pigments describe a different subtractive context and do not explain cyan as a secondary light colour.

The governing concept is medium-dependent colour classification. Before naming a colour as primary or secondary, identify whether the work uses traditional pigments, printing inks, or additive light, because each system has different primaries and mixing results. Option A is correct. Price, brush length and paper size may affect practical work, but they do not determine the scientific classification of a colour.

The governing concept is controlled colour adjustment based on the dried sample. Red-orange lies between red and yellow; if the result appears too yellow, the mixture must be shifted toward red. Therefore option A is correct: increase the red slightly, make another small test, and reassess after drying. More yellow would intensify the error, while blue or white would change other properties rather than provide the direct hue correction.

The governing concept is tinting: adding white raises the value of a hue. A small, gradual addition of white makes green lighter while limiting the accompanying loss of saturation, so option A gives the best control. Red is broadly complementary to green and would neutralise it, black lowers value and can make the mixture muddy, while mixing all three primaries usually produces a duller neutralised colour rather than a clean light green.

The governing concept is controlled value contrast. Deep violet establishes a dark, enclosing mood, while a few restrained lighter violet tints provide depth and guide attention without destroying the atmosphere. Using the same light violet everywhere removes contrast; a large amount of yellow, violet’s complement, would neutralise it; and removing violet would abandon the intended colour effect. Thus option A offers the most controlled treatment.

The governing concept is reproducibility in colour mixing. A name such as green or violet identifies a broad hue family, but it does not show whether the mixture leans strongly toward one component. Recording the ratio allows the artist to repeat the same bias, adjust it deliberately, and compare samples consistently. It says nothing about brush quality or paper size, and a ratio cannot turn a secondary colour into a primary colour.

The governing concept is tint formation. When white is mixed with red-violet, its value increases, so the colour appears lighter; this lighter mixture is called a tint. Adding white does not change the hue into green, and it does not make the colour complementary. In ordinary pigment mixing, white generally lowers chromatic intensity rather than increasing saturation. Therefore A identifies the principal, predictable change, while the other options confuse value with hue or saturation.