Colour mixing

A darker version of a colour is called a shade. To create dark yellow-green, begin with the yellow-green hue and add a small amount of black. White would lighten it into a tint, yellow and red would move toward orange, and extra water would dilute the paint rather than create a darker shade. Therefore, option D is correct.

The governing concept is adjusting pigment proportions during colour mixing. If a red-and-green brown mixture looks too red, the red component is excessive relative to the green component. Adding a small amount of green moves the ratio toward balance and reduces the visible red bias, so option B is correct. Yellow may change the hue, white lightens it, and black darkens it rather than directly correcting the red-green proportion.

The governing concept is correcting the proportion of two complementary pigments. Blue and orange oppose each other on the colour wheel. When the mixture is too blue, adding a small amount of orange increases the underrepresented component and reduces the blue bias, making the colour more balanced and muted. Therefore option C is correct. Red or yellow alone changes the hue, while white mainly lightens the mixture without neutralising the excess blue as directly.

This question applies the principle of complementary mixing and proportional correction. Yellow and violet are complementary colours. If the mixture appears too violet, violet is present in excess or yellow is relatively insufficient; adding yellow gradually counteracts the violet and restores balance. Thus option D is correct. Blue or red would introduce a different hue, and black would darken the mixture without specifically correcting the complementary-colour imbalance.

The governing concept is reproducibility in colour mixing. A colour mixture depends strongly on the identities and relative quantities of its pigments, so recording the ratio—such as two parts blue to one part yellow—provides a practical recipe for making the same shade again. Option B is therefore correct. Brush size, palette colour, and paper thickness may affect application or appearance, but they do not record the mixture formula itself.

The governing concept is the change in optical appearance between wet and dry paint. While wet, the liquid medium can make a colour look darker, glossier, or more saturated; as it evaporates, the pigment layer and surface reflect light differently. The exact change depends on the medium and paper, so option C is the accurate general statement. Paint does not always become black, and neither the brush nor the paper literally changes the pigment in that way.

The governing concept is complementary-colour neutralisation. Red is complementary to green, so adding a small amount of red reduces green's saturation and produces a quieter, muted green rather than a highly vivid one. Therefore option B is correct. More yellow or blue shifts the green toward a warmer or cooler hue, and white creates a lighter tint; neither specifically neutralises green in the same way as a small amount of its complement.

The governing concept is complementary colour mixing. Blue lies opposite orange on the colour wheel, so a very small amount of blue reduces orange’s brightness and moves it toward a muted neutral. Option C is correct. Yellow or red would usually make the orange warmer or stronger, while white would lighten it and create a tint rather than specifically neutralising its intensity. Add blue gradually because too much can make the mixture dull or brownish.

The governing concept is complementary colour mixing. Yellow is opposite violet on the colour wheel, so adding a very small quantity of yellow reduces violet’s saturation and makes it less intense. Option D is therefore correct. Red or blue would tend to shift violet toward a warmer or cooler violet, not neutralise it. Black can darken violet, but darkening is different from carefully muting its colour intensity. The amount should be added gradually to avoid an overly muddy result.

The governing concept is the creation of tints and shades. When white is added to a base colour in increasing proportions, the result becomes progressively lighter; each mixture is a tint of that colour. Therefore, option A is correct. Adding black would create progressively darker shades. Mixing all primary colours often produces a dark, dull neutral, while equal complementary colours also tend toward a neutral brown or grey instead of several lighter versions. The white should be added gradually for controlled steps.

The governing concept is shade formation through controlled value change. Adding small amounts of black to a base colour lowers its lightness and produces progressively darker shades. Thus, option B is correct. White would create lighter tints, not darker versions. Increasing water usually changes transparency, flow, or paint consistency rather than reliably making a darker shade. Yellow may alter the hue toward a warmer colour but does not provide a general method for darkening every base colour. Black must be added cautiously because it can overpower the original hue.

The governing concept is value, which describes how light or dark a colour appears. Grey can be made by combining black and white. A light grey contains a greater proportion of white, whereas a dark grey contains a greater proportion of black. Therefore, option C is correct. The exact quantities determine the position on the value scale; changing red, blue, or yellow is not the basic requirement for this neutral comparison. Adding another hue could make the grey coloured rather than neutral.

The governing concept is adjustment of a light tint by changing its value and saturation. Adding white to an overly yellow cream mixture increases lightness and dilutes the visual strength of the yellow, making the result paler and more balanced. Option D is correct for the intended school-level paint-mixing situation. Red would make the mixture warmer, black would darken it, and blue could neutralise yellow but might shift the cream toward a dull greenish or grey appearance rather than simply producing a lighter cream. White should be added in small stages.

The governing concept is controlled colour mixing by starting with a light base and adding stronger hues in small quantities. A white base with a little red and yellow produces a light, warm peach; the proportions can be adjusted gradually until the desired result is reached. Therefore, option A is correct. Black added to red makes a dark, dull mixture, blue and yellow generally move toward green, and violet mixed with green tends toward a muted neutral rather than peach. Adding small amounts to white gives the best control.

The governing concept is strengthening the base hue in a tint. Pink is commonly understood as red lightened with white, so adding a small amount of red increases the red pigment and makes the pink deeper and more saturated. Option B is correct. More white would make the pink still lighter. Yellow would shift it toward a warmer peach or coral direction, while green is complementary to red and could dull or neutralise the mixture. The red should be added gradually to prevent the colour from becoming too strong.

The governing concept is correcting a weak tint by increasing its base hue. If light blue is too pale, adding a small amount of the original blue pigment strengthens the blue identity while preserving the same general hue. Thus, option C is correct. More white would make the mixture paler, yellow would shift it toward green, and much black would make it darker and duller rather than cleanly bluer. The base blue should be added in small increments, with mixing between additions, so the desired intensity is reached without overshooting.

The governing concept is restoring the dominant base hue in an over-dark mixture. If dark red has been made too black, adding a small amount of the original red increases the red pigment and reduces the visual dominance of black, bringing back a clearer red appearance. Therefore, option D is correct. Adding more black would worsen the problem. Green, the complement of red, could neutralise or muddy the mixture, while blue would shift it toward a purplish, cooler colour rather than correcting the excessive blackness. Add red gradually for control.

The governing concept is colour purity in water-based painting. Clean water does not introduce traces of earlier pigments, dust, or muddy residue into a new mixture. Therefore, it helps the mixed colour remain close to the intended hue and brightness, making option A correct. Dirty water may contaminate the mixture, while it does not primarily darken colours, harden brushes, or thicken paper.

The governing concept is preventing cross-contamination during colour mixing. Leaving space between separate paint piles or liquid mixtures stops them from flowing, touching, or being picked up together by the brush. Thus option B preserves each mixture’s intended hue and purity. Spacing does not directly make paint dry faster, increase the palette’s weight, or automatically lighten colours, so the other options are unsuitable.

The governing concept is testing a colour before final application. A sample patch shows how the pigment appears on that paper, including its opacity, brightness, and possible change as water evaporates and the paint dries. This allows the artist to adjust the mixture before risking the finished work, so option C is correct. Cutting paper, drying a brush, and reducing the painting’s size are unrelated purposes.

The governing concept is systematic colour mixing and recording. When an artist writes the amounts or ratios of pigments used, the same recipe can be followed later and adjusted methodically. This develops the ability to reproduce a colour accurately, making option D correct. Drawing lines, cutting paper, and washing brushes are useful art skills, but none follows directly from documenting colour proportions.

The governing concept is the formation of tertiary colours on the colour wheel. A tertiary colour is generally produced by mixing a primary colour with the adjacent secondary colour, such as yellow with green to obtain yellow-green. Therefore option A is correct. Black and white make a neutral value, water changes dilution, and combining three complementary colours does not describe the standard tertiary-colour method.

The governing concept is identifying adjacent colours on the colour wheel. Blue-violet is positioned between blue and violet, so mixing blue, a primary colour, with violet, a neighbouring secondary colour, produces this tertiary hue. Therefore option D is correct. Yellow-violet is not the standard adjacent pair for this result, blue-green produces another tertiary hue, and red-orange produces red-orange.

The governing concept is the relationship between adjacent colours and tertiary hues. Blue-green lies between blue and green on the colour wheel, so mixing blue with its neighbouring secondary colour, green, creates blue-green. Thus option B is correct. Yellow-orange, red-violet, and red-orange are valid neighbouring pairs for other tertiary colours, but none produces the blue-green result asked for here.

The governing concept is controlling value and hue during colour mixing. Black lowers the value of a colour and, when added excessively, makes the mixture very dark and dull. As a result, the original base hue becomes difficult to recognise, so option D is correct. It will not become lighter, transparent, or a primary colour; those changes do not follow from adding black.