As discussed in a recent post, color can be used to direct the viewer to focus on a certain part of your composition. Color can also effectively set a mood.
Every color has a personality, can establish a mood, and can conjure certain emotions. This is true not just for quilts, but for clothing, home decorating, and advertising–anywhere color is used. The world is filled with colors, and each and every one of them elicits a feeling in humans. We are all drawn to certain colors because of the way they make us feel.
Every color has a temperature. Blues and greens are cool colors, they conjure up feelings of tranquility–of water and grass and the serenity of nature. They will establish a mood that is calm and restful.
Reds and oranges, on the other hand, are warm colors–passionate, the color of fire; hot and exciting. Yellow is the color of sunshine, the more orange is added to the yellow, the hotter the color temperature. A quilt in these colors will be bold and energizing.
Purple, being made of both a warm and cool color can swing both ways. If the composition of the purple is 50% red and 50% blue, it will serve equally well as either a warm or cool color. But shift the percentages and it will lean in one direction–a bluer purple (more blue in the mix) is cooler, a warmer purple (more red in the mix) is warmer.
Using white will make other colors in your quilt look crisp and clear; black will intensify the colors around it, and beige make your quilt romantic and feminine–and will work better with grayer colors–like dusty rose, lilac and soft sage green.
The other component is saturation. Saturation is like dye–if you put a piece of white fabric into blue dye for only a few minutes, the resulting color will be a nice light blue. Leave it in a long time and you get a deep rich blue–or a color that is highly saturated. Saturation is different from value, it is the intensity of color.
If you add white to a saturated color, it gets lighter. Add black and it gets darker. Add both white and black and the color becomes “dusty” or grayer. The grayer a color becomes; the less saturation it has.
For juvenile quilts, primary colors are simple and straightforward. Using highly saturated red, yellow and blue with the addition of complementary green, orange and purple will result in a quilt with lots of energy and visual excitement.

On the other hand, baby quilts, where energy and excitement is not the goal, do better in a single color range like yellow, blue, or pink. Keeping these colors lighter and unsaturated, mixing them with white without complementary color accents will result in a quilt that is soft and soothing.
Look at these two water quilts.

Here the colors are highly saturated, they give the impression of a hot sunny day in a tropical climate. The addition of the yellow brings more “sunshine” and brightness to this quilt. Mixing it with its complement, purple, makes it really stand out.
In this one, however

The colors are grayer, less saturated, and set a mood of a foggy day. Sticking to only cooler blue tones, with no complementary accents, sets a mood that is naturally cooler than the quilt above.

Here, the hot colors extenuate the movement of the woman’s arms, to set a mood that is exuberant. Even though there is blue in the background, it is highly saturated. Compare this to the more somber mood set by these colors:

If this had been executed using highly saturated warm tones, it would not have set the same mood as the man himself. Look at this example, which set a cooler mood due to color:

Now look at what happens when I take that image into Photoshop and increase the saturation of the colors, and warm them up…

Changes the mood completely. Makes me wonder why that guy is wearing a winter hat.
What is the mood here:

Cool tones, grayer saturation, just a spot of warm color at the face for focal point. Does this quilt say warm and happy to you?
The depiction of a face is no different–color can support the mood and expression. A face does not need to be done in accurate flesh tones to be readily recognizable as a face, just like a black and white photo, if the values are correct the brain understands the color shift. Here, the face of the woman is fleshy and happy. Using peachy tones (which are not realistic) make her look happy and healthy:

In this next example, however, the face of the woman is sad, using peachy tones would have been a contradiction. By using green tones, which are also not at all realistic, we set a mood that feels sickly and depressed–which is better suited to her expression, and therefore amplifies it.

Whether you make traditional, updated traditional or art quilts, it is important to understand how the colors you choose and where you put them in your quilt will impact your final results. Understanding these principles will help you plan and execute the quilt you envision.